MOS options flow: unusual options activity in Mosaic Co.
Updated 28 September 2026, 09:54 ET
Over the last week the tape recorded 20 unusual options prints in Mosaic Co. (MOS), $2.2M of tracked premium, close to even between bullish and bearish premium. Bullish premium was $1.1M against $1.1M bearish; $1.3M went into calls and $898K into puts, a put call ratio of 0.67. The largest print was $799K of MOS 17 Jun 2027 $27 calls on 25 September 2026, executed at bid. The last session with prints, 25 September 2026, added 3 prints and $1.2M of premium. MOS closed at $23.01 on 25 September 2026, down 2.9%.
This week's unusual flow
Prints from 21 September 2026 to 25 September 2026, 5 sessions. Delayed tier: every print is shown twenty minutes after it executed, and the page is rebuilt after each session.
Net premium is bullish minus bearish premium. The put call ratio is put premium divided by call premium, weighted by money rather than by contract count. Sweeps is the share of prints executed across several exchanges at once. Read the guide: Reading the Pulse.
Largest prints of the week
| Date | Contract | Type | Size | Open int. | Premium | Execution | Sentiment | Tier |
|---|---|---|---|---|---|---|---|---|
| 25 Sep 2026 | MOS 17 Jun 2027 $27 calls | Trade | 3,400 | 192 | $799K | At bid | Bearish | High conviction |
| 21 Sep 2026 | MOS 17 Sep 2027 $20 puts | Trade | 1,250 | 78 | $294K | At bid | Bullish | Notable |
| 25 Sep 2026 | MOS 17 Jun 2027 $18 puts | Trade | 1,500 | 4,785 | $218K | At bid | Bullish | |
| 25 Sep 2026 | MOS 17 Jun 2027 $27 calls | Trade | 600 | 192 | $141K | At bid | Bearish | Notable |
| 24 Sep 2026 | MOS 16 Oct 2026 $24.50 calls | Trade | 1,750 | 127 | $122K | At ask | Bullish | Notable |
| 24 Sep 2026 | MOS 17 Jun 2027 $24 puts | Sweep | 169 | 158 | $66K | At ask | Bearish | High conviction |
| 24 Sep 2026 | MOS 9 Oct 2026 $24.50 calls | Sweep | 866 | 224 | $56K | At ask | Bullish | High conviction |
| 22 Sep 2026 | MOS 21 Jan 2028 $25 puts | Trade | 101 | 1,445 | $55K | At bid | Bullish | |
| 22 Sep 2026 | MOS 21 Jan 2028 $25 puts | Trade | 101 | 1,445 | $53K | At bid | Bullish | |
| 24 Sep 2026 | MOS 18 Dec 2026 $24 puts | Sweep | 211 | 1,747 | $50K | At bid | Bullish | Notable |
| 23 Sep 2026 | MOS 17 Sep 2027 $25 puts | Sweep | 98 | 281 | $47K | At ask | Bearish | Notable |
| 24 Sep 2026 | MOS 19 Mar 2027 $26 puts | Sweep | 100 | 19 | $45K | At bid | Bullish | Notable |
Size above open interest means the trade opened a position larger than everything that existed in the contract the night before. Above ask and below bid are the most aggressive executions. Read the guide: Size versus open interest.
Where the money is aimed
| Expiry | Prints | Premium | Calls share | Net premium |
|---|---|---|---|---|
| 17 Jun 2027 | 4 | $1.2M | 77% | -$788K |
| 17 Sep 2027 | 2 | $341K | 0% | +$247K |
| 16 Oct 2026 | 5 | $262K | 84% | +$230K |
| 21 Jan 2028 | 3 | $136K | 0% | +$136K |
| 19 Mar 2027 | 2 | $84K | 46% | +$6K |
| 9 Oct 2026 | 1 | $56K | 100% | +$56K |
The most premium, $1.2M, is aimed at the 17 Jun 2027 expiry; the nearest expiry with unusual prints is 9 Oct 2026.
A print in a contract expiring this week is a view about the next few days, often about a known event; a print months out is a different kind of statement. Read the guide: 0DTE options flow.
The last session, 25 September 2026
| Date | Contract | Type | Size | Open int. | Premium | Execution | Sentiment | Tier |
|---|---|---|---|---|---|---|---|---|
| 25 Sep 2026 | MOS 17 Jun 2027 $27 calls | Trade | 3,400 | 192 | $799K | At bid | Bearish | High conviction |
| 25 Sep 2026 | MOS 17 Jun 2027 $18 puts | Trade | 1,500 | 4,785 | $218K | At bid | Bullish | |
| 25 Sep 2026 | MOS 17 Jun 2027 $27 calls | Trade | 600 | 192 | $141K | At bid | Bearish | Notable |
Every print in MOS with its full detail, the live tape, one tap filters and saved screeners: open MOS in Options Sentiment Screener.
Price
The live quote and the price chart sit beside the ticker's flow in the app: open MOS in Options Sentiment Screener.
Analysts
The most recent analyst targets on file, from 12 firms, have a median of $26, 13.0% above the last close. The last 90 days brought 1 downgrade.
Calls bought at a strike above the average target are a bet that the analysts are too cautious; puts far below the price in a name they like are protection or a strong disagreement. Read the guide: Reading one ticker's flow.
About Mosaic Co.
- Exchange
- NYSE
- Sector
- Materials
- Industry
- Chemicals
- Headquarters
- TAMPA, Florida
- Website
- mosaicco.com
The Mosaic Company, through its subsidiaries, produces and markets concentrated phosphate and potash crop nutrients in North America and internationally. The company operates through three segments: Phosphates, Potash, and Mosaic Fertilizantes. It owns and operates mines, which produce concentrated phosphate crop nutrients, such as diammonium phosphate, monoammonium phosphates, and ammoniated phosphate products.
In the same sector
Flow pages for other Materials names in the S&P 500:
LIN Linde PLCNEM Newmont Corp.FCX Freeport-McMoRan Inc.SHW Sherwin Williams Co.ECL Ecolab Inc.APD Air Products & Chemicals, Inc.CRH CRH Public Ltd. Co.NUE Nucor Corp.
Learn
- What unusual options activity means
- Reading one ticker's flow
- Sweeps, blocks and where a trade printed
- Size versus open interest
- Bullish or bearish, how a print's sentiment is inferred
- The conviction score and whale prints
The live tape for MOS with every print's execution detail, one tap filters for calls, puts, sweeps and 0DTE, saved screeners and, for Realtime subscribers, push alerts and no delay. The same screen is in the iOS and Android apps.
Open MOS in Options Sentiment Screener