BSX options flow
From the October 21, 2026 session tape · published after the close
BSX options traded $758K in premium across 51 prints on October 21, 2026: 65% in calls and 35% in puts, with 0% in contracts expiring that day. That was 142% of its average session over the prior 19.
BSX largest options trades, October 21, 2026
| Time | Contract | Size | Price | Premium |
|---|---|---|---|---|
| 10:32 | 45P Oct 30 | 600 | $2.20 | $132K |
| 10:19 | 45P Oct 30 | 400 | $1.75 | $70K |
| 13:14 | 45C Oct 30 | 409 | $1.67 | $68K |
| 14:22 | 40C Jan 15 | 81 | $6.51 | $53K |
| 14:35 | 40C Jan 15 | 65 | $6.74 | $44K |
| 14:48 | 40C Jan 15 | 51 | $6.60 | $34K |
| 13:01 | 45C Nov 20 | 139 | $2.35 | $33K |
| 11:40 | 42P Oct 30 | 304 | $1.00 | $30K |
| 11:13 | 44P Nov 20 | 133 | $2.25 | $30K |
| 15:01 | 45C Dec 18 | 98 | $3.00 | $29K |
| 13:14 | 50C Oct 30 | 694 | $0.41 | $28K |
| 13:42 | 50C Jan 15 | 141 | $1.85 | $26K |
| 12:47 | 45C Jan 15 | 69 | $3.60 | $25K |
| 14:35 | 43.5C Oct 30 | 102 | $2.40 | $24K |
| 15:15 | 40C Jan 15 | 30 | $6.51 | $20K |
The largest single BSX print was a 45 put expiring Oct 30 for $132K at 10:32 ET.
The busiest strikes by premium were 45 calls ($224K), 45 puts ($204K), 40 calls ($166K), 50 calls ($75K).
Last 20 sessions of BSX premium, calls vs puts: Oct 15 $245K (36% calls) · Oct 16 $741K (48% calls) · Oct 19 $1.4M (82% calls) · Oct 20 $1.5M (44% calls) · Oct 21 $758K (65% 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 BSX pages.
These are the October 20, 2026 closing numbers. Members see BSX's map move live all session.
Common questions
$758K in premium across 51 prints, 65% calls. The largest print was a 45 put for $132K.
65% 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.