Unusual options activity is option volume far above normal for a contract or a stock, usually measured against open interest or against average daily volume, and it is a clue, not a verdict. To read it, check whether the contracts were likely opened or closed, how many dollars of premium changed hands, which side of the bid/ask the trades hit, the strike and expiry, whether the trade was part of a spread or a hedge, and what is on the event calendar. Then wait for the stock itself to confirm. Most alerts fail at least one of those tests.
The alerts are everywhere, including on the Wall Street War Room desk. The skill is not spotting them. It is knowing which questions an alert can answer and which it leaves blank.
What "unusual" actually measures
There are two common yardsticks, and they say different things.
- Volume vs. open interest. Today's contracts traded compared with the contracts already outstanding in that series. A ratio well above 1 means more contracts changed hands in one session than existed going in.
- Volume vs. average daily volume. Today's call or put count compared with the stock's typical day. MarketBeat-style alerts ("an increase of 186% compared to the average daily volume") use this one.
Neither one tells you direction, intent or who traded. Both only tell you that something was louder than usual.
The terms you need first
- Volume: contracts traded during a session. As the Options Industry Council puts it, volume captures activity within a session, while open interest is the running count of contracts still open (OIC)
- Open interest (OI): the number of contracts still open. The OCC calculates it from the exchanges' reports of each day's opening and closing transactions, and it is posted the morning after the session. It does not update intraday, so a big volume print is measured against yesterday's OI.
- Opening vs. closing: every option order is marked to open or to close (buy to open, sell to open, buy to close, sell to close). If both sides open, OI rises. If both close, it falls. If one opens and one closes, it is unchanged. That is why volume above OI hints at new positions but does not prove it.
- Premium: the option's price, quoted per share. A standard equity option covers 100 shares, so dollar premium = contracts x price x 100.
- Sweep vs. block: terms used by flow services rather than formal exchange definitions. A "sweep" usually means an order split across several exchanges to fill fast. A "block" usually means one large print. Services define the thresholds differently, so treat the labels loosely.
The 7-step checklist
- Volume vs. open interest
- Premium in dollars
- Bid/ask side (who was the aggressor)
- Strike and expiry
- Single leg, spread or hedge
- Catalyst calendar
- Confirmation in the underlying
1. Volume vs. open interest
A ratio well above 1 in a single series is the strongest hint that fresh positions were opened. Check the next morning's OI. If it jumped by roughly the volume, the positions were opened and held. If it barely moved, the volume was mostly churn or closing trades. Also check the base: a huge ratio on a tiny OI can be a small trade.
2. Premium in dollars
Contract counts flatter cheap options. Hypothetical example, for the arithmetic only: 2,000 contracts at $1.50 is 2,000 x $1.50 x 100 = $300,000 of premium. The same 2,000 contracts at $0.05 is $10,000. Same headline count, a 30x difference in money at risk.
3. Bid/ask side
Trades printing at or near the ask suggest the buyer was in a hurry. Trades at the bid suggest a seller was. Prints in the middle tell you little. "Heavy call volume" means nothing about direction until you know which side initiated it.
4. Strike and expiry
Short-dated, out-of-the-money contracts are cheap leverage on a fast move. Longer-dated, closer-to-the-money contracts look more like positioning or a stock substitute. An alert with no strike and no expiry has skipped this step entirely.
5. Single leg, spread or hedge
A big call print may be one leg of a spread whose other leg is short. A big put print may come from someone who owns the stock: the Montréal Exchange describes a protective put as "buying a put option on a stock that you already own." Hedges are not bets against the company.
6. Catalyst calendar
Options flow ahead of a scheduled earnings date or a pending deal vote is expected, not mysterious. Flow with no visible catalyst is more interesting, and also easier to over-read.
7. Confirmation in the underlying
The stock has to agree. Traders look for a price move with share volume above its average. Our Microsoft breakout piece shows the gap: $MSFT rose 2.38% to $535.07 in the session covered by our October 12, 2026 piece, while volume stayed below its 20-day average. Price moved. Participation didn't.
Four real alerts, run through the checklist
Each of these came through WSWR coverage. The point is not what the stocks did next. The point is how much each alert could and could not tell you.
| Alert | What it stated | Steps it lets you run | Steps left blank |
|---|---|---|---|
| $FIGR, Sept. 2026 | 8,118 calls; volume/OI 153.2 | 1 | 2, 3, 4, 5 |
| $AMTX, Sept. 28, 2026 | 6,674 calls vs. 1,605 average (+316%) | Partly 2; 7 | 1, 3, 4, 5 |
| $CCJ, Oct. 15, 2026 | 64,670 puts vs. 22,573 average (+186%) | 7 | 1, 2, 3, 4, 5 |
| $HOOD, Oct. 13, 2026 | "Unusual options-flow activity," no figures | None | 1 to 5, and 7 has nothing to confirm |
Figure Technology ($FIGR): a giant ratio on a small base
WSWR reported on September 25, 2026, citing a Futu options roundup, that 8,118 calls traded at a volume-to-open-interest ratio of 153.2. Do the division: 8,118 / 153.2 is about 53 contracts of prior open interest. That ratio is real, but it is mostly a small denominator. Step 1 is satisfied. Without strikes, prices or trade side, steps 2 through 5 are not.
Aemetis ($AMTX): cheap stock, cheap contracts
MarketBeat reported 6,674 calls traded on Monday, September 28, 2026, against a 1,605 daily average, a 316% increase. The stock rose $0.15 to $1.95 on 630,572 shares, against average volume of 1,253,871. Two lessons. First, a call cannot be worth more than the stock, so the whole print was at most 6,674 x $1.95 x 100, about $1.3 million, and almost certainly far less. Second, share volume ran about half its average. Step 7 did not confirm.
Cameco ($CCJ): big puts, quiet stock
MarketBeat counted 64,670 puts bought on Thursday, October 15, 2026, against a 22,573 average, up 186%. Shares were up 1.8% at $82.93 in that report on 3,045,307 shares, below the 3,521,393 average. Our Cameco coverage framed it as traders bracing for volatility. Step 5 matters most here: puts on a widely held stock are often holders buying protection. $CCJ closed at 81.52 on October 16, 2026, but one session of price change does not tell you whether the puts were hedges or bets.
Robinhood ($HOOD): the alert that says almost nothing
Our Robinhood volatility watch on October 13, 2026 covered a TrendSpider flag of "unusual options-flow activity" with no strikes, no expiries, no premiums and no volume counts. Run the checklist and steps 1 through 5 return blanks. Step 6 is a calendar check you can do yourself. Step 7 has no stated direction to confirm. $HOOD closed at 98.87 on October 16, 2026, down 4.9% that session, and that move neither validates nor refutes an alert that never said which way. That is the honest read: a reason to watch, nothing more.
Common traps
- Calls = bullish. Call volume can be short sellers buying calls as cover, covered-call writers buying back their calls, or one leg of a spread. Without trade side and open/close data, it is just volume.
- Big puts = someone expects a crash. Many large put prints are protection on shares already owned.
- Every alert is "smart money." Alerts rarely identify who traded. Size in contracts is not proof of an institution.
- Big counts on cheap options. Thousands of contracts on a low-priced stock or far out-of-the-money strike can add up to modest dollars. Do the step 2 math.
- Forgetting the OI lag. Intraday volume is compared with the prior day's open interest. The answer to "was it opened?" arrives the next morning.
Desk Notes
What the numbers say: Unusual activity is a measured fact: $CCJ puts ran 186% above average on October 15, 2026, and $AMTX calls ran 316% above average on September 28, 2026. Those spikes are worth a look.
What they don't: Direction, intent, or whether the contracts were opened. In both cases share volume came in below average, and none of the four alerts above reported strikes or expiries.
FAQ
What counts as unusual options activity?
Volume well above what is normal, measured either against a contract's open interest or against the stock's average daily option volume. Each data service sets its own threshold, so there is no single official definition.
Does volume above open interest mean new positions?
It hints at them but does not prove them. Open interest is set from the prior day's opening and closing trades, so check whether OI rose the next morning before concluding positions were opened.
Is unusual options activity a buy signal?
No. It shows that trading was heavier than usual, not why. Hedges, spreads and closing trades all produce the same headline. Traders treat it as a prompt to run the checklist and wait for confirmation in the stock.
Where can I see open interest?
Most broker option chains show it next to volume, and the OCC publishes open interest data on theocc.com. Remember it reflects the prior session's close.