MDB options flow
From the October 21, 2026 session tape · published after the close
MDB options traded $18.5M in premium across 614 prints on October 21, 2026: 76% in calls and 24% in puts, with 0% in contracts expiring that day. That was 83% of its average session over the prior 19.
MDB largest options trades, October 21, 2026
| Time | Contract | Size | Price | Premium |
|---|---|---|---|---|
| 16:00 | 330C Nov 13 | 340 | $65.49 | $2.2M |
| 12:05 | 380P Jan 15 | 139 | $46.25 | $643K |
| 14:30 | 380C Nov 13 | 157 | $30.35 | $476K |
| 16:00 | 400C Nov 13 | 181 | $21.00 | $380K |
| 11:51 | 290C Nov 20 | 37 | $89.70 | $332K |
| 12:05 | 290C Nov 20 | 34 | $95.90 | $326K |
| 11:23 | 375P Oct 30 | 167 | $16.50 | $276K |
| 16:00 | 400P Nov 13 | 83 | $30.34 | $252K |
| 12:05 | 360P Jan 15 | 68 | $36.05 | $245K |
| 11:37 | 370C Jan 15 | 45 | $53.70 | $242K |
| 12:31 | 355P Nov 6 | 250 | $8.68 | $217K |
| 16:00 | 387.5C Oct 30 | 101 | $16.87 | $170K |
| 16:00 | 377.5C Oct 23 | 101 | $15.35 | $155K |
| 16:00 | 375P Nov 13 | 85 | $17.98 | $153K |
| 13:23 | 450C Nov 20 | 146 | $9.90 | $145K |
The largest single MDB print was a 330 call expiring Nov 13 for $2.2M at 16:00 ET.
The busiest strikes by premium were 330 calls ($2.7M), 400 calls ($1.7M), 380 calls ($1.4M), 370 calls ($1.1M).
Last 20 sessions of MDB premium, calls vs puts: Oct 15 $10.3M (46% calls) · Oct 16 $16.5M (53% calls) · Oct 19 $8.5M (63% calls) · Oct 20 $12.9M (53% calls) · Oct 21 $18.5M (76% 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 MDB pages.
These are the October 20, 2026 closing numbers. Members see MDB's map move live all session.
Common questions
$18.5M in premium across 614 prints, 76% calls. The largest print was a 330 call for $2.2M.
76% 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.