Big stocks near record highs while small stocks lag and deal activity picks up
The headline is upbeat on the market overall, while CNI's options show more call positions than puts, which points the same general way.
GuruFocus · 10/09
Undercurrent · Money-flow snapshot
CNI Max Pain, Dark Pool & Options Flow
CNI max pain for the Oct 16, 2026 expiry is $115, from the Fri Oct 9 options chain. The last price, $117.78, is 2.4% above it. Call wall $125 · put floor $100.
What the institutional money is doing on CNI right now — dark pool, options positioning, and where the news and the money disagree. Free.
The money right now
Dark pool share
34.6% (market avg 52%)
Dark pool volume vs its norm
0.5×
Short share of that
72.5% (norm 69%)
Price
$117.78
Max pain
$115
Oct 16 exp
Call wall
$125
Oct 16 exp
Put floor
$100
Oct 16 exp
Put/Call ratio
0.22
Squeeze pressure
18
Dark pool share: Off-exchange volume was quiet at 0.5× its norm
Off-exchange prints never touch the public book, so they move size without moving the quote. That is the point of using them. Large players were quiet in this name that day. The share (34.6%) may look normal, but the absolute size behind it was thin.
Source: FINRA · Fri 10/9 close
What it means: The money signals for CNI lean toward calls: standing positions and recent traded volume both carry more calls than puts, with low squeeze pressure. Off-exchange volume is below its usual share and the short share sits above its norm, so the off-exchange read is mixed rather than clearly bullish.
News vs the money
CN moves a record amount of grain in the third quarter
The good news lines up with a call-leaning options picture, though the money data does not show a fresh bet tied to this report.
Zacks Investment Research · 10/08
Ausbil Investment raises its stake in Canadian National Railway by 12.1%
A fund buying more shares fits the call-leaning options data, but one fund's stake change does not by itself show a broad shift in money flow.
Defense World · 10/08
CN reports a record third-quarter grain shipment
The record shipment supports a positive story that matches the call-leaning options data, with no sign of conflicting money flow.
GlobeNewsWire · 10/06
CN will release third-quarter results on October 30
This is a neutral scheduling notice, and the options data leaning toward calls does not conflict with it.
GlobeNewsWire · 10/06
See it live, free
Get Undercurrent — the news behind the money →Add CNI to My Watchlist in the free SIGNUM HQ app (iPhone · Android) →New to this? Why'd It Move? turns today's move into a 60-second lesson →What is a “divergence”?
A divergence is when the news narrative and the institutional money flow point in opposite directions — a bearish headline while large call premium is bought, or heavy dark-pool selling under a bullish story. It signals the crowd and the desks may disagree.
How to read these numbers
Dark-pool volume — The share of trading executed off-exchange, at wholesalers and dark pools. About half of all US share volume prints there on an ordinary day, so the level by itself says almost nothing. What carries information is the distance from this name’s own recent norm, and whether the off-exchange size ran above its usual.
Off-exchange short share — How much of that off-exchange volume was sold short. The median across all listed names is about 49%, because wholesalers filling retail buy orders sell short and cover later. A reading near half is plumbing, not a bearish vote — compare it to the same name’s own 20-day norm.
Max pain — The price where the most options expire worthless — positioning often gravitates toward it near expiry.
Call wall / Put floor — Strikes with the heaviest call/put open interest — they often act as short-term resistance and support.
Put/Call ratio — Below ~0.7 leans bullish (more calls); above ~1 leans defensive (more puts).
Nearby tickers
Today’s off-exchange leaders → · See all tickers →Today’s rankings — what broke from normal
Learn the numbers