Mosaic (MOS) Options Chain

NYSE: MOSIndustrialsAgricultural ChemicalsUSD

19.73-0.24 (-1.20%)

At close: Oct 8, 4:01 PM ET · Delayed 15 min

After hours: 19.84 +0.48%

Expiration date

Expiration: Oct 9, 2026
Days to expiration: 1
Share price: $19.73
Put/call ratio (OI): 0.70
Put/call ratio (volume): 14.46
ATM implied volatility: 47.1%
Expected move: ±$0.4861
Open interest (C / P): 4.37K / 3.07K

MOS options summary

The MOS options chain for the October 9, 2026 expiration lists 27 call and 22 put contracts, with 1 day until expiration. Open interest stands at 4,370 calls and 3,067 puts, a put/call ratio of 0.70, which is fairly balanced between calls and puts. At-the-money implied volatility near the $19.50 strike is 47.1%, which implies the market expects a move of about ±$0.4861 (2.5%) in Mosaic stock by expiration.

The most open interest sits at the $24.50 call (1.10K contracts) and the $21.50 put (900 contracts).

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

MOS options chain · October 9, 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
9	1	225.0%	5.97	5.40	6.10	14.00	0.00	0.05	0.03	234.4%	2	3
—	—	—	—	—	—	16.00	0.00	0.40	0.17	246.1%	—	2
—	—	—	—	—	—	17.00	0.00	0.40	0.07	193.0%	2	2
12	21	169.5%	1.85	1.40	2.05	18.00	0.00	0.40	0.03	139.8%	1	11
8	1	66.0%	0.93	0.60	0.85	19.00	0.00	0.10	0.05	61.3%	12	11
20	4	51.2%	0.65	0.20	0.65	19.50	0.05	0.15	0.11	43.0%	1,006	91
MOS $19.73
43	44	44.9%	0.10	0.05	0.15	20.00	0.30	0.50	0.33	59.4%	19	302
222	15	47.7%	0.05	0.00	0.05	20.50	0.70	1.05	0.78	62.1%	10	191
84	9	56.3%	0.03	0.00	0.05	21.00	1.10	1.40	1.20	90.6%	15	775
266	11	84.4%	0.03	0.00	0.10	21.50	1.65	1.95	1.83	75.0%	1,354	900
655	4	87.5%	0.01	0.00	0.05	22.00	2.20	2.40	2.36	90.6%	787	518
506	3	101.6%	0.01	0.00	0.05	22.50	2.50	3.10	3.10	104.7%	53	58
61	20	114.1%	0.05	0.00	0.05	23.00	2.60	3.70	1.95	245.7%	5	2
223	1	204.7%	0.01	0.00	0.40	23.50	3.30	4.20	3.10	265.2%	16	11
170	7	172.7%	0.09	0.00	0.15	24.00	4.20	4.50	4.27	175.0%	248	163
1,100	20	198.4%	0.04	0.00	0.20	24.50	4.00	5.30	2.73	325.4%	1	1
357	2	243.0%	0.01	0.00	0.35	25.00	5.10	5.50	5.10	168.8%	41	24
194	20	175.0%	0.03	0.00	0.05	25.50	5.50	6.10	5.62	179.7%	1	1
131	3	280.5%	0.03	0.00	0.40	26.00	6.20	6.40	6.25	190.6%	4	0
20	5	293.8%	0.18	0.00	0.40	26.50	—	—	—	—	—	—
168	1	307.0%	0.21	0.00	0.40	27.00	7.00	7.60	7.27	210.9%	3	0
15	1	240.6%	0.04	0.00	0.10	27.50	7.70	7.90	7.70	221.9%	4	1
27	25	332.0%	0.02	0.00	0.40	28.00	—	—	—	—	—	—
11	1	344.5%	0.25	0.00	0.40	28.50	—	—	—	—	—	—
9	2	243.8%	0.05	0.00	0.05	29.00	—	—	—	—	—	—
32	17	367.2%	0.05	0.00	0.40	29.50	—	—	—	—	—	—
9	1	378.1%	0.20	0.00	0.40	30.00	9.60	10.90	10.31	514.8%	2	0
17	9	399.6%	0.03	0.00	0.40	31.00	—	—	—	—	—	—
1	—	410.2%	0.20	0.00	0.40	31.50	—	—	—	—	—	—

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 October 9, 2026 expiration, the MOS put/call ratio based on open interest is 0.70 (3,067 puts vs 4,370 calls), and 14.46 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 October 9, 2026 is about 47.1%, an annualized estimate of how much the market expects Mosaic stock to move.

How many MOS option expiration dates are there?

MOS has 14 listed expiration dates, from Oct 9, 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.