Iron Mountain (Delaware)Common Stock REIT (IRM) Options Chain

NYSE: IRMReal EstateReal Estate Investment TrustsUSD

114.51+1.54 (+1.36%)

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

Expiration date

Expiration: Oct 16, 2026
Days to expiration: 5
Share price: $114.51
Put/call ratio (OI): 0.28
Put/call ratio (volume): 1.33
ATM implied volatility: 37.8%
Expected move: ±$5.06
Open interest (C / P): 5.03K / 1.42K

IRM options summary

The IRM options chain for the October 16, 2026 expiration lists 30 call and 27 put contracts, with 5 days until expiration. Open interest stands at 5,029 calls and 1,422 puts, a put/call ratio of 0.28, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $115.00 strike is 37.8%, which implies the market expects a move of about ±$5.06 (4.4%) in Iron Mountain (Delaware)Common Stock REIT stock by expiration.

The most open interest sits at the $120.00 call (2.08K contracts) and the $110.00 put (492 contracts).

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

IRM options chain · October 16, 2026

IRM 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
—	—	—	—	—	—	55.00	0.00	1.40	0.44	345.1%	—	1
—	—	—	—	—	—	75.00	0.00	0.85	0.54	194.7%	1	5
0	40	205.0%	33.70	32.90	35.50	80.00	0.00	0.75	0.04	165.2%	4	2
—	—	—	—	—	—	85.00	0.00	0.75	0.10	141.5%	10	11
0	—	—	37.65	0.00	0.00	90.00	0.00	0.85	0.05	122.1%	10	7
0	—	—	18.25	0.00	0.00	95.00	0.00	0.85	0.18	99.6%	23	29
1	1	98.9%	13.90	13.00	15.50	100.00	0.05	0.25	0.33	61.7%	1	162
—	—	—	—	—	—	101.00	0.00	0.35	0.45	59.8%	8	19
—	—	—	—	—	—	102.00	0.00	0.35	0.20	56.0%	—	1
—	—	—	—	—	—	103.00	0.00	0.30	0.23	50.5%	—	1
—	—	—	—	—	—	104.00	0.00	0.35	0.08	57.0%	2	23
—	—	—	—	—	—	105.00	0.00	0.15	0.20	43.0%	4	92
—	—	—	—	—	—	106.00	0.05	0.20	0.62	41.9%	3	5
—	—	—	—	—	—	107.00	0.05	0.70	1.39	55.0%	1	2
—	—	—	—	—	—	108.00	0.15	0.30	0.25	37.9%	1	11
—	—	—	—	—	—	109.00	0.05	0.70	1.00	44.9%	—	2
35	5	54.8%	5.15	4.30	5.90	110.00	0.25	0.65	0.51	38.5%	14	492
6	—	48.6%	2.90	3.50	4.90	111.00	0.05	0.85	0.63	37.6%	10	15
11	7	44.0%	3.30	3.20	4.00	112.00	0.65	1.45	0.80	43.3%	27	3
7	1	46.0%	4.08	2.40	3.50	113.00	0.90	1.40	1.25	35.5%	2	101
IRM $114.51
225	4	41.5%	1.50	1.50	2.20	115.00	1.40	2.25	1.95	34.0%	25	150
19	5	39.4%	0.95	0.95	1.65	116.00	2.15	2.95	2.60	36.0%	10	20
3	6	38.5%	1.80	0.70	1.25	117.00	2.80	3.60	6.45	35.9%	—	2
12	3	38.4%	1.40	0.05	0.95	118.00	—	—	—	—	—	—
12	2	38.1%	1.35	0.25	0.70	119.00	—	—	—	—	—	—
2,082	12	36.3%	0.38	0.20	0.45	120.00	4.80	6.40	7.50	47.6%	1	148
3	1	45.9%	0.15	0.05	0.65	121.00	5.90	7.60	5.82	56.8%	1	1
81	3	54.0%	0.11	0.05	0.80	122.00	—	—	—	—	—	—
13	—	60.8%	1.51	0.05	0.90	123.00	—	—	—	—	—	—
4	—	61.0%	1.55	0.00	0.75	124.00	—	—	—	—	—	—
379	5	45.3%	0.10	0.00	0.20	125.00	9.30	12.10	11.51	86.3%	1	116
9	6	56.4%	0.20	0.00	0.75	126.00	—	—	—	—	—	—
3	—	48.5%	0.05	0.00	0.15	127.00	—	—	—	—	—	—
753	1	71.5%	0.03	0.00	0.85	130.00	14.50	17.10	16.10	66.4%	1	1
615	1	62.7%	0.05	0.00	0.15	135.00	—	—	—	—	—	—
203	8	98.3%	0.10	0.00	0.75	140.00	—	—	—	—	—	—
259	2	111.3%	0.05	0.00	0.75	145.00	—	—	—	—	—	—
98	1	125.1%	0.43	0.00	0.80	150.00	—	—	—	—	—	—
96	1	135.2%	0.48	0.00	0.75	155.00	—	—	—	—	—	—
54	2	146.2%	0.28	0.00	0.75	160.00	—	—	—	—	—	—
3	2	156.6%	0.35	0.00	0.75	165.00	—	—	—	—	—	—
43	1	170.5%	0.38	0.00	0.85	170.00	—	—	—	—	—	—

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 IRM put/call ratio?

For the October 16, 2026 expiration, the IRM put/call ratio based on open interest is 0.28 (1,422 puts vs 5,029 calls), and 1.33 based on today's volume. A ratio above 1 means more puts than calls.

What is IRM's implied volatility?

At-the-money implied volatility for IRM options expiring October 16, 2026 is about 37.8%, an annualized estimate of how much the market expects Iron Mountain (Delaware)Common Stock REIT stock to move.

How many IRM option expiration dates are there?

IRM has 14 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.