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Order Types Explained: Can a Stop-Loss Sell You Out? | Canadian Investing · How Canadian Markets Work

• 0:00
  So for today's deep dive, we're pulling from
• 0:02
  a really fascinating stack of materials. We have
• 0:05
  some SEC research papers on market structure,
• 0:09
  some recent institutional brokerage data, and,
• 0:12
  well, a few behavioral finance studies too. Yeah,
• 0:14
  it's a dense stack today. It is, yeah. But the
• 0:17
  mission here is to look past the superficial
• 0:20
  buttons on your brokerage app. We want to understand
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  the invisible plumbing of the market. Right.
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  Specifically, we're dissecting order types. So
• 0:29
  market limit, stop loss, and stop limit orders.
• 0:32
  Right. Because there's this gap between what
• 0:35
  retail investors believe these tools do and how
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  the market actually processes them. And that
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  gap is, well, it's where a lot of capital just
• 0:43
  quietly goes to die. Wow. To really see that
• 0:46
  clearly, let's just step right into a hyper -specific
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  scenario, one that plays out thousands of times
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  a day. OK, lay it out for us. So let's take this
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  slowly and just visualize the math. Imagine a
• 0:57
  really disciplined investor. They buy a mid -cap
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  company at, say, $50 a share, and they want to
• 1:03
  practice strict risk management. Right. So they
• 1:05
  immediately set a stop loss order at $45. Right.
• 1:08
  So the logic there is that they've mathematically
• 1:10
  capped their loss. Exactly. It's rigidly set
• 1:13
  at 10%. Right. Just $5 a share of risk. Right.
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  They feel perfectly safe. But then the market
• 1:19
  closes on Tuesday. And overnight, while trading
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  is halted, the company issues just a catastrophic
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  warning. Oh, no. Like an SEC investigation or
• 1:29
  something. Yeah, exactly. A massive accounting
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  failure, something that just fundamentally alters
• 1:33
  the valuation. So Wednesday morning, the opening
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  bell rings, and the stock opens at $38. Wow.
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  So it completely blew past the $45 stop. It did.
• 1:44
  The stop loss is triggered. The shares are sold
• 1:45
  at 38. And instead of a 10 % loss, they're looking
• 1:48
  at a 24 % loss. $12 a share just gone. Oh, man.
• 1:54
  It is brutal. But you know the natural reaction
• 1:56
  there is to blame the broker, right? The system
• 1:58
  broke. And that is the crux of our entire deep
• 2:01
  dive today. Because the system did not fail.
• 2:04
  Wait, really? Really. There was no technological
• 2:06
  error. No one front ran the order. The market
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  infrastructure operated entirely as designed.
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  The order worked flawlessly. OK, that is a really
• 2:15
  uncomfortable realization. Because if the system
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  functioned perfectly during a drop from 50 straight
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  to 38, then the flaw isn't the software. No,
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  it's not. It's the investor's fundamental understanding
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  of what a stop loss actually is. Precisely. And
• 2:33
  to understand why that safety net failed, we
• 2:35
  really have to look at the baseline mechanics
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  of liquidity. Right. Which means, going back
• 2:40
  to the basics for a second, I know anyone listening
• 2:42
  already knows the dichotomy of trading, but you
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  either prioritize speed or you prioritize price.
• 2:48
  Right. Market orders versus limit orders. Yeah.
• 2:50
  So a market order buys you absolute certainty
• 2:52
  of execution, but you sacrifice price certainty.
• 2:56
  And a limit order does the exact inverse. It
• 2:58
  buys you certainty of price, but you sacrifice
• 3:01
  execution. But we need to look closer at what
• 3:03
  prioritizing speed actually does to an order
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  book, especially in a thin market. Oh, right.
• 3:08
  Because the illusion of the screen price is what
• 3:10
  really sets the trap. Exactly. Like if I'm looking
• 3:12
  at a thinly traded small cap stock, the screen
• 3:16
  might say $4. But that's just the top of the
• 3:19
  national best bid and offer, right? The NBBO.
• 3:22
  Right. It's just the very surface. It doesn't
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  mean there's some infinite well of shares sitting
• 3:26
  there at exactly $4 waiting for you. Right. It's
• 3:29
  like going to a grocery store, seeing a sign
• 3:32
  for $4 apples, and asking for 500 of them. Yeah.
• 3:36
  But there are only three on the display. And
• 3:38
  the manager just keeps raising the price for
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  every extra apple they have to pull from the
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  back. That is a perfect analogy. The liquidity
• 3:45
  is incredibly shallow. There might only be 50
• 3:47
  shares offered at $4. And sitting slightly lower
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  on the visible book, the next seller wants $4
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  .10. The next one wants $4 .50. So when you send
• 3:57
  a large market order in, you're instructing the
• 4:00
  routing algorithm to act like a vacuum. It just
• 4:03
  aggressively sweets the book. It eats the 50
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  shares at $4, then immediately pays $4 .10, then
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  $4 .50. Exactly. It moves deeper and deeper.
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  until your total volume is filled. So by the
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  time it's done crossing that spread, your average
• 4:19
  spill price might be $4 .52. Right, so you've
• 4:22
  just suffered a 13 % slippage simply because
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  you demanded immediate execution. Which is exactly
• 4:28
  why institutional algorithms parcel out their
• 4:30
  orders over hours or days. They don't want to
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  disturb the water. A market order is a very blunt
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  instrument. Now, a limit order prevents that
• 4:39
  slippage completely by just refusing to cross
• 4:41
  the spread. Right, it draws a line in the sand.
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  But it's funny, behavioral finance studies show
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  that retail investors often view an unfilled
• 4:49
  limit order as a failure. They really do. They
• 4:52
  see the stock move away from their limit price,
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  and they just feel the sting of a missed opportunity.
• 4:57
  Yeah. But it really requires a psychological
• 4:59
  shift. An unfilled limit order isn't a missed
• 5:02
  opportunity. It's the exact outcome you engineered.
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  Perfectly set. The market declined your bid,
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  and your capital was preserved. You can always
• 5:10
  reassess tomorrow, but you can never un -buy
• 5:12
  a block of shares that you overpaid for by 13%.
• 5:15
  Right. Capital protection through inaction. Which,
• 5:18
  I guess this brings us right back to the stop
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  -loss chap from our $50 stock scenario. It does,
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  because investors look at a stop -loss and they
• 5:28
  assume it has the protective qualities of a limit
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  order. Because it has a specific price attached
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  to it, $45. Exactly. They believe it acts as
• 5:36
  a structural floor. But when you look at the
• 5:38
  actual routing mechanics, it's not a floor at
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  all. It's just a hidden trap door. It is entirely
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  just a trigger. A tripwire. So the $45 is just
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  a condition? Yes. The very moment the consolidated
• 5:51
  tape prints a transaction at or below $45, the
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  stop loss undergoes this instant transformation.
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  It wakes up? It wakes up, it ceases to be a dormant
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  trigger, and it becomes a live aggressive market
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  order. And we just established what a market
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  order does. It blindly sweeps the book. for whatever
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  is available at whatever cost. Right. So let's
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  map this back onto that overnight gap scenario.
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  The market closes Tuesday at 50. The bad news
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  hits at 7 p .m. Throughout the night, market
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  makers and institutional desks are digesting
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  this news. And their primary objective is protecting
• 6:25
  their own capital. Right. They're not going to
• 6:26
  commit financial suicide just to provide liquidity.
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  Exactly. So they widen their spreads massively,
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  or they just pull their bids entirely. They're
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  not offering to buy a 49 or 48 when they know
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  the valuation is gutted. So the order book basically
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  just evaporates in that upper range. It completely
• 6:43
  vanishes. So Wednesday morning arrives, the opening
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  auction begins, and they have to match this massive
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  imbalance of overnight sell orders with very
• 6:51
  few buyers. Right. And the clearing price they
• 6:53
  arrive at That very first printed trade of the
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  morning is $38. Yes. The price did not slide
• 7:00
  down a slope. It didn't tick down gracefully
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  past your $45 stop. It was a quantum leap from
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  50 straight to 38. Exactly. But because that
• 7:09
  first print at 38 is mathematically below your
• 7:12
  $45 tripwire, the condition is met. Oh, wow.
• 7:15
  So the trapdoor springs open right then. It springs
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  open, the order wakes up, becomes a market order,
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  and is instantly injected into the chaos of the
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  opening bell. Just instructing the broker to
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  sell right now to whoever will buy. And the only
• 7:29
  buyers are down at 38. Right. So it fills and
• 7:33
  you take the 24 % loss. That is just so profound.
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  The protection fails exactly at the moment you
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  need it most. It really does. Because if a stock
• 7:43
  is just slowly drifting down on a quiet Tuesday,
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  The start loss works fine. Market makers have
• 7:48
  tight spreads. But in a sudden crash, the exact
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  thing you bought the insurance for, the liquidity
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  vanishes, the order turns into a market order,
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  and the floor just drops out entirely. It drops
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  out completely. It reminds me a lot of the SEC
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  reports on the May 2010 flash crash. Oh, yeah.
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  That's a perfect historical mirror for this.
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  It really is. When the high frequency trading
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  algorithms momentarily withdrew their liquidity,
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  prices just plummeted in minutes. And all those
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  retail stop loss orders got triggered. across
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  the board. And because they became market orders,
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  they chased the vanishing bids all the way down.
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  Blue chip stocks were executing for pennies.
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  Wow. So the automated safety nets literally poured
• 8:28
  gasoline on the fire. They absolutely did. So,
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  OK, a smart investor reads about this gap risk,
• 8:34
  right? They realize the danger of turning their
• 8:37
  order into a market order during a crash. And
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  they try to outsmart the plumbing. And usually
• 8:44
  they land on the stop limit order. Right. The
• 8:46
  false fix. It seems so logical on the surface,
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  doesn't it? You combine the trigger of a stop
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  with the price certainty of a limit. Yeah, but
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  structurally it just changes the nature of the
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  failure. Let's run that exact same overnight
• 8:56
  gap scenario. OK, let's do it. So I buy at 50.
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  I set a stop limit order. My trigger is 45 and
• 9:02
  my limit is also 45. I'm telling the system,
• 9:05
  if it hits 45, wake up, but do not accept a penny
• 9:08
  less than $45. Right. The news hits. Market opens
• 9:12
  at 38. The trigger at 45 is technically breached,
• 9:16
  so the order wakes up. It wakes up. But instead
• 9:19
  of transforming into a market order, it transforms
• 9:21
  into a passive limit order. So it sits on the
• 9:25
  exchange's order book at $45, demanding a buyer
• 9:28
  at 45, while the rest of the market is transacting
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  way down at 38. And obviously, no one is going
• 9:34
  to volunteer to pay $45 for an asset they can
• 9:37
  just go buy for $38. Never. So the order just
• 9:40
  sticks there. It never fills. Wait, so if it
• 9:42
  refuses to sell, what happens to my shares? You
• 9:45
  still own them. You retain total ownership of
• 9:47
  the shares. And as the morning progresses and
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  the panic sets in, the stock plummets to 35,
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  then 30. Oh my goodness. Your capital is just
• 9:56
  evaporating. You successfully prevented the bad
• 9:59
  price at the open by ensuring that no sale happened
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  at all. That is such a fascinating paradox. By
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  rigidly enforcing a floor, you just lock yourself
• 10:07
  into a collapsing asset. Exactly. It highlights
• 10:10
  an absolute law of market microstructure. No
• 10:13
  order type can magically synthesize liquidity
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  that does not organically exist. You just can't
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  force a transaction if there's no willing counterparty.
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  You really can't. That is the immovable reality
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  of the order book. So if these tools designed
• 10:27
  to protect us are so flawed, how does a smart
• 10:31
  investor actually mitigate this risk? Well, Based
• 10:35
  on the data, the defense mechanism has to be
• 10:37
  implemented before the trade is ever executed.
• 10:40
  It really comes down to position sizing. Oh,
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  right. Because if a 24 % loss on a single holding
• 10:45
  would ruin your portfolio, the flaw isn't the
• 10:48
  order type. No, it's the allocation. The position
• 10:50
  was simply too large to begin with. Proper sizing
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  protects you in a gap down. Order types do not.
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  Position sizing is grounded in reality. Relying
• 10:59
  on a stop loss is just, well, it's risk management
• 11:02
  based on hope. Perfectly put. And this becomes
• 11:05
  even more critical when we look at long -term
• 11:07
  passive index investors. Yeah. Applying a stop
• 11:10
  loss to a broad market index fund seems like
• 11:13
  you're basically automating your own capitulation.
• 11:15
  You really are. The whole premise of indexing
• 11:18
  is absorbing volatility to capture the equity
• 11:20
  risk premium over decades. We know the market
• 11:23
  has severe temporary drawdowns. Right. So setting
• 11:26
  a stop loss mechanically guarantees that a temporary
• 11:29
  fluctuation becomes a permanent realized loss.
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  Exactly. the worst possible moment. When valuations
• 11:35
  are lowest and expected future returns are theoretically
• 11:38
  highest, your automated order strips you of your
• 11:42
  assets. It just removes all human judgment from
• 11:44
  the equation. You are literally volunteering
• 11:46
  to sell the bottom. You are. And even stepping
• 11:49
  away from crisis events, there are major complications
• 11:52
  with just standard market timing, like looking
• 11:55
  at the volume data for the first 15 minutes of
• 11:58
  the trading day. Oh, 9 .30 AM. Yes, the opening
• 12:01
  bell. It's fascinating. But it looks like a highly
• 12:04
  toxic environment for retail market orders. It
• 12:06
  is arguably the most volatile period of the session.
• 12:09
  The opening cross is this massive batch auction.
• 12:12
  The system is trying to digest overnight news,
• 12:15
  earnings and all the retail orders that piled
• 12:17
  up. Right. And the market makers have to find
• 12:19
  a single clearing price for all that chaos. Exactly.
• 12:22
  And because they're taking on the risk of that
• 12:24
  massive information asymmetry, they demand a
• 12:27
  premium. So they widen the bid asks spreads massively.
• 12:31
  They do. The gap between what buyers will pay
• 12:33
  and sellers will accept is at its absolute widest
• 12:37
  in those first few minutes. True price discovery
• 12:39
  just hasn't settled yet. So if a retail investor
• 12:42
  just casually places a market order over breakfast
• 12:45
  and it executes right at 930, they're needlessly
• 12:49
  paying a huge liquidity premium. They are absorbing
• 12:52
  the complete cost of that widespread. Wow. So
• 12:55
  for a long term investor, there is zero mathematical
• 12:58
  advantage to trading at the open. None. Waiting
• 13:00
  just 60 minutes for the market makers to establish
• 13:03
  a rhythm provides immense clarity and significantly
• 13:06
  better prices. It's such a simple behavioral
• 13:09
  adjustment and you know we see similar traps
• 13:11
  with other exotic order types too. like good
• 13:13
  till canceled orders. Oh, definitely. A GTC order
• 13:17
  just extends the lifespan of a limit order for
• 13:19
  30 or 60 days. But the vulnerability there isn't
• 13:23
  the algorithm. It's human memory. Right, because
• 13:25
  you analyze a company, you decide $40 is fair,
• 13:28
  and you place the GTC order. Two months pass.
• 13:30
  You completely forget about it. Then the company
• 13:32
  announces a devastating product recall. The stock
• 13:35
  plummets from 50 to 35. And as it falls, it crosses
• 13:39
  your stale $40 limit. The order executes. And
• 13:43
  you just automatically bought shares of an impaired
• 13:46
  company at a place you no longer agree with just
• 13:49
  because you forgot to cancel it. Exactly. And
• 13:51
  I assume trailing stops suffer from the same
• 13:53
  structural blind spots we talked about earlier.
• 13:55
  They really do. People love them because they
• 13:58
  promise to lock in gains by moving the trigger
• 14:00
  price upward as the stock rises. But under the
• 14:04
  hood, it is identical to the standard stop loss.
• 14:07
  It's the exact same trap door. Just moved higher.
• 14:10
  Once that trailing trigger is breached, it instantly
• 14:12
  transforms into a market order. It is blindly
• 14:15
  subjected to the exact same gap risks and vanishing
• 14:18
  liquidity. So if we pull all these threads together,
• 14:21
  we arrive at a pretty stark view of the market's
• 14:23
  plumbing. They do. Just recapping quietly. Market
• 14:27
  orders by certainty of execution, but you sacrifice
• 14:30
  price. Limit orders defend capital by demanding
• 14:33
  a price, but you might not get filled. And when
• 14:36
  you try to blend them, the flaws are exposed.
• 14:39
  A stop loss is just a conditional trigger. In
• 14:42
  a gap down, it becomes a market order that fills
• 14:44
  at a devastating discount. And the stark limit
• 14:47
  just shifts the failure, ensuring the order never
• 14:49
  fills at all as the asset collapses. Algorithms
• 14:52
  just cannot conjure liquidity out of thin air.
• 14:54
  No, they cannot. Which actually leaves us with
• 14:57
  one final kind of provocative concept to ponder
• 15:00
  from those behavioral studies. OK, I'm intrigued.
• 15:03
  We've methodically broken down how a stop loss
• 15:06
  provides this demonstrably false sense of security,
• 15:09
  right? The mathematical floor is an illusion,
• 15:12
  but does the existence of that very illusion
• 15:14
  actually increase systemic and individual risk?
• 15:18
  Oh, think about human behavior. If an investor
• 15:22
  incorrectly believes their downside is strictly
• 15:24
  capped at 10 % by a piece of software. Exactly.
• 15:27
  Their perception of risk is completely distorted.
• 15:30
  Emboldened by this fake safety net, they alter
• 15:33
  their behavior. They might double their standard
• 15:35
  position size. Oh, wow. Or they might allocate
• 15:37
  capital into highly speculative micro caps they'd
• 15:40
  normally avoid. Exactly. They are aggressively
• 15:42
  over -leveraging their portfolio precisely because
• 15:46
  they think they hold a guaranteed emergency exit
• 15:48
  ticket. It's a profound moral hazard. The very
• 15:51
  tool designed to strictly limit risk might secretly
• 15:55
  be the mechanism pushing them to take on catastrophic
• 15:58
  exposure. It is. If you truly believe the floor
• 16:00
  is solid concrete, you might jump from a higher
• 16:02
  ledge. But as we've seen when the market gaps,
• 16:05
  that floor is nothing more than open air.