Mosaic Co. options tape
Read from CBOE's delayed chain on 23 September 2026, with Mosaic Co. at $24.71: open interest within 90 days was 74,673 call and 44,569 put contracts, a put/call ratio of 0.6; the day's volume was 4,871 calls and 3,556 puts (0.73). The most call open interest sits at the $25.00 strike (13,780 contracts) and the most put open interest at $25.00 (9,018). The at-the-money straddle for 25 September 2026, 2 days out, was priced at 4.7% of spot. For 16 October 2026, implied volatility was 50.4% at the put 5% below spot and 47.4% at the call 5% above, +3.0 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $25.00 | 13,780 |
| Puts | $25.00 | 9,018 |
The strike with the most open interest on each side, across expiries within 90 days.
Strikes where the day's volume was at least twice the open interest
| Contract | Volume | Open interest before | Premium traded |
|---|---|---|---|
| 20 November 2026 put at $23.00 | 1,739 | 18 | $191,290 |
Volume of at least 200 contracts and at least twice the open interest, with at least $25,000 of premium at the mid; contracts expiring the same day are left out. Premium is mid price times volume times 100.
Open interest built since 22 September 2026
| Contract | Open interest now | Change |
|---|---|---|
| 16 October 2026 put at $24.50 | 957 | +957 |
| 25 September 2026 put at $23.50 | 668 | +480 |
| 20 November 2026 call at $27.00 | 454 | +422 |
| 2 October 2026 put at $23.50 | 393 | +373 |
| 25 September 2026 call at $25.00 | 661 | +362 |
| 16 October 2026 put at $24.00 | 1,104 | +344 |
| 25 September 2026 put at $23.00 | 630 | +292 |
| 16 October 2026 call at $26.00 | 4,315 | +258 |
Contracts whose open interest rose by 250 or more against the previous day's snapshot.
Source
CBOE delayed quotes for MOS, the free 15-minute-delayed chain, read once a day. Figures describe positioning; they are not a forecast.
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