Mosaic (MOS) Options Chain

NYSE: MOSIndustrialsAgricultural ChemicalsUSD

18.74-0.99 (-5.02%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

Expiration date

Expiration: Nov 20, 2026
Days to expiration: 40
Share price: $18.74
Put/call ratio (OI): 2.18
Put/call ratio (volume): 0.51
ATM implied volatility: 54.2%
Expected move: ±$3.36
Open interest (C / P): 2.74K / 5.97K

MOS options summary

The MOS options chain for the November 20, 2026 expiration lists 18 call and 16 put contracts, with 40 days until expiration. Open interest stands at 2,736 calls and 5,975 puts, a put/call ratio of 2.18, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $19.00 strike is 54.2%, which implies the market expects a move of about ±$3.36 (17.9%) in Mosaic stock by expiration.

The most open interest sits at the $27.00 call (597 contracts) and the $21.00 put (1.83K contracts).

Summary generated from market data by MetaCap's automated system. Methodology

MOS options chain · November 20, 2026

MOS calls and puts by strike price. Shaded cells are in the money.
Calls							Puts
OI	Vol	IV	Last	Bid	Ask	Strike	Bid	Ask	Last	IV	Vol	OI
—	—	—	—	—	—	15.00	0.10	0.20	0.15	53.1%	5	157
—	—	—	4.40	—	—	16.00	0.20	0.55	0.25	56.8%	2	16
70	170	58.1%	4.35	2.20	2.65	17.00	0.45	0.55	0.50	51.6%	17	67
—	—	—	—	—	—	18.00	0.80	0.95	0.88	52.4%	35	78
MOS $18.74
—	—	—	1.74	—	—	19.00	1.30	1.70	1.35	54.2%	184	261
23	349	53.8%	0.89	0.75	0.95	20.00	1.90	2.10	2.00	53.3%	68	656
92	152	52.8%	0.60	0.50	0.60	21.00	2.60	2.80	2.67	52.3%	149	1,833
197	71	53.9%	0.39	0.30	0.45	22.00	3.40	3.80	2.82	52.0%	14	1,015
372	68	54.6%	0.20	0.20	0.30	23.00	4.30	4.50	4.50	53.9%	13	1,533
201	82	58.2%	0.19	0.15	0.25	24.00	4.80	5.60	5.24	68.0%	2	149
546	19	57.6%	0.15	0.10	0.15	25.00	5.60	6.90	5.22	92.9%	3	98
226	1	60.5%	0.20	0.05	0.15	26.00	6.60	7.60	4.65	81.7%	1	72
597	2	62.1%	0.15	0.00	0.15	27.00	7.50	9.00	5.90	112.4%	1	20
102	4	56.3%	0.04	0.00	0.05	28.00	8.40	9.90	5.24	113.3%	2	1
62	1	66.8%	0.05	0.00	0.10	29.00	9.40	11.00	4.57	125.0%	—	19
66	2	70.7%	0.05	0.00	0.10	30.00	10.40	12.00	8.90	130.9%	1	0
2	1	99.2%	0.25	0.00	0.45	31.00	—	—	—	—	—	—
103	1	103.7%	0.40	0.00	0.45	32.00	—	—	—	—	—	—
31	1	105.3%	0.29	0.00	0.40	33.00	—	—	—	—	—	—
46	43	99.8%	0.20	0.00	0.25	34.00	—	—	—	—	—	—

In-the-money callsIn-the-money puts. IV = implied volatility, OI = open interest (contracts). Each contract covers 100 shares. Quotes delayed at least 15 minutes.

Frequently asked questions

What is the MOS put/call ratio?

For the November 20, 2026 expiration, the MOS put/call ratio based on open interest is 2.18 (5,975 puts vs 2,736 calls), and 0.51 based on today's volume. A ratio above 1 means more puts than calls.

What is MOS's implied volatility?

At-the-money implied volatility for MOS options expiring November 20, 2026 is about 54.2%, an annualized estimate of how much the market expects Mosaic stock to move.

How many MOS option expiration dates are there?

MOS has 13 listed expiration dates, from Oct 16, 2026 to Jan 19, 2029.

What does "in the money" mean?

A call is in the money when the strike price is below the current share price; a put is in the money when the strike is above it. In-the-money contracts have intrinsic value and are shaded in the table.