BLK options flow
From the October 21, 2026 session tape · published after the close
BLK options traded $998K in premium across 20 prints on October 21, 2026: 50% in calls and 50% in puts, with 0% in contracts expiring that day. That was 46% of its average session over the prior 19.
BLK largest options trades, October 21, 2026
| Time | Contract | Size | Price | Premium |
|---|---|---|---|---|
| 15:02 | 1070P Jan 15 | 102 | $27.10 | $276K |
| 15:02 | 1200C Nov 20 | 118 | $14.70 | $173K |
| 15:16 | 1200C Nov 20 | 100 | $14.00 | $140K |
| 12:21 | 1040P Jan 15 | 57 | $20.80 | $119K |
| 10:06 | 1135P Oct 23 | 30 | $14.00 | $42K |
| 15:28 | 1140C Nov 20 | 10 | $35.40 | $35K |
| 10:06 | 1130P Oct 23 | 30 | $11.40 | $34K |
| 13:01 | 1160C Nov 20 | 12 | $25.60 | $31K |
| 12:08 | 1065C Oct 23 | 4 | $75.33 | $30K |
| 12:08 | 1080C Nov 13 | 4 | $71.89 | $29K |
| 15:28 | 1145C Nov 20 | 8 | $32.40 | $26K |
| 15:53 | 1150C Nov 20 | 8 | $30.60 | $24K |
| 14:49 | 1140P Oct 23 | 30 | $7.34 | $22K |
| 15:28 | 1140P Oct 23 | 4 | $11.50 | $5K |
| 15:52 | 1140C Nov 20 | 1 | $35.00 | $4K |
The largest single BLK print was a 1070 put expiring Jan 15 for $276K at 15:02 ET.
The busiest strikes by premium were 1200 calls ($313K), 1070 puts ($276K), 1040 puts ($121K), 1135 puts ($42K).
Last 20 sessions of BLK premium, calls vs puts: Oct 15 $5.7M (88% calls) · Oct 16 $8.1M (96% calls) · Oct 19 $1.4M (62% calls) · Oct 20 $3.1M (93% calls) · Oct 21 $998K (50% calls).
A large print is a trade, not a verdict: it can be a hedge, a close, or one leg of a spread. Read it next to where dealers are positioned, on the other BLK pages.
These are the October 20, 2026 closing numbers. Members see BLK's map move live all session.
Common questions
$998K in premium across 20 prints, 50% calls. The largest print was a 1070 put for $276K.
50% of premium was in calls. Premium alone does not show direction: buyers and sellers, hedges and spreads all print the same way.
No. This page shows the last completed session, published after the close. Members see the flow as it prints.
Compare: options flow on other tickers
Measured from the closing options book and rebuilt after every close. Nothing on this page is live. Levels are where dealer hedging is concentrated, not targets or forecasts. Not investment advice.