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: Dec 18, 2026
Days to expiration: 68
Share price: $18.74
Put/call ratio (OI): 0.67
Put/call ratio (volume): 0.39
ATM implied volatility: 50.8%
Expected move: ±$4.11
Open interest (C / P): 44.73K / 29.76K

MOS options summary

The MOS options chain for the December 18, 2026 expiration lists 30 call and 24 put contracts, with 68 days until expiration. Open interest stands at 44,733 calls and 29,764 puts, a put/call ratio of 0.67, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $19.00 strike is 50.8%, which implies the market expects a move of about ±$4.11 (21.9%) in Mosaic stock by expiration.

The most open interest sits at the $30.00 call (7.93K contracts) and the $25.00 put (7.42K contracts).

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

MOS options chain · December 18, 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
5	1	102.0%	8.98	8.30	9.60	10.00	0.00	0.10	0.02	76.2%	2	0
11	3	79.4%	6.60	5.90	7.20	12.50	0.00	0.15	0.05	56.3%	5	108
47	48	71.1%	11.00	4.70	5.70	14.00	0.10	0.20	0.05	50.4%	5	693
387	2	59.2%	4.30	4.00	4.40	15.00	0.25	0.35	0.30	50.7%	7	428
44	10	62.4%	5.60	3.20	3.90	16.00	0.45	0.55	0.50	51.7%	10	2,164
44	2	52.8%	2.37	2.20	2.50	17.50	0.95	1.10	1.01	50.0%	208	1,683
MOS $18.74
36	119	51.3%	1.50	1.30	1.55	19.00	1.70	1.85	1.75	50.3%	295	1,301
528	140	50.9%	1.25	1.05	1.25	20.00	2.25	2.55	2.40	50.6%	100	4,862
7,393	92	50.2%	0.85	0.80	0.85	21.00	2.95	3.20	3.20	54.0%	42	1,456
2,470	9	51.1%	0.53	0.45	0.60	22.50	4.10	4.50	4.30	51.8%	54	4,051
708	6	50.4%	0.34	0.20	0.40	24.00	5.30	5.70	5.52	57.1%	7	1,745
5,041	1,284	52.9%	0.25	0.20	0.30	25.00	6.30	6.60	6.45	57.9%	7	7,416
1,867	105	52.8%	0.20	0.05	0.30	26.00	6.80	7.60	4.55	63.0%	1	2,082
3,946	41	59.3%	0.15	0.10	0.25	27.50	8.10	9.00	6.75	64.0%	1	427
1,080	6	65.2%	0.15	0.10	0.25	29.00	9.50	10.50	5.10	70.1%	35	141
7,927	40	61.5%	0.09	0.05	0.15	30.00	10.50	11.50	10.10	74.0%	10	548
3,232	2	76.5%	0.18	0.00	0.45	31.00	11.40	13.00	6.55	105.1%	1	49
3,377	10	66.0%	0.08	0.05	0.10	32.50	12.90	13.90	7.35	74.0%	1	419
155	29	70.3%	0.10	0.00	0.15	34.00	0.00	0.00	11.25	—	—	0
1,759	152	73.0%	0.08	0.00	0.15	35.00	0.00	0.00	12.00	—	4	0
80	1	92.4%	0.05	0.00	0.45	36.00	0.00	0.00	12.90	—	—	0
251	1	96.6%	0.05	0.00	0.45	37.50	17.90	19.50	11.80	128.4%	7	1
8	3	104.8%	0.41	0.15	0.40	39.00	—	—	—	—	—	—
2,703	2	85.2%	0.06	0.00	0.15	40.00	12.60	15.85	7.35	—	17	190
2	1	103.1%	0.19	0.00	0.40	41.00	—	—	—	—	—	—
197	1	106.6%	0.11	0.00	0.40	42.50	22.90	24.50	16.70	142.8%	1	0
154	1	112.3%	0.05	0.00	0.40	45.00	—	—	—	—	—	—
180	1	117.4%	0.03	0.00	0.40	47.50	—	—	—	—	—	—
125	1	90.6%	0.05	0.00	0.05	50.00	—	—	—	—	—	—
976	2	98.4%	0.09	0.00	0.05	55.00	—	—	—	—	—	—

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 December 18, 2026 expiration, the MOS put/call ratio based on open interest is 0.67 (29,764 puts vs 44,733 calls), and 0.39 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 December 18, 2026 is about 50.8%, 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.