MOS Unusual Option Activity
The Mosaic Company (MOS) option volume on Nov 4, 2026 was 10.6% of open interest, well above the 20-day average of 3.0%. Calls made up 76.1% of the volume. Relative to open interest, that was MOS's most active day in 12 weeks.
MOS Unusual Options FAQ
What makes option activity unusual?
Option activity is usually called unusual when a contract trades much more volume than its open interest, which can mean traders are opening new positions.
Is MOS seeing unusual options activity?
On Nov 4, 2026, Mosaic options traded 44.4K contracts against 417.34K open, a volume to open interest ratio of 0.11, well above its 20-day average. The table above lists the contracts with the highest ratios.
Are MOS traders trading more calls or puts?
Calls made up 76.1% of Mosaic option volume on Nov 4, 2026, a put/call ratio of 0.31, so calls outnumber puts. The MOS option volume chart shows calls and puts by strike.
What is The Mosaic Company?
Mosaic is one of the largest phosphate and potash producers in the world.