Columbia Banking System (COLB) Options Chain

NASDAQ: COLBFinanceMajor BanksUSD

28.37-0.16 (-0.56%)

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

Expiration date

Expiration: May 21, 2027
Days to expiration: 223
Share price: $28.37
Put/call ratio (OI): 0.07
Put/call ratio (volume): 0.67
ATM implied volatility: 32.8%
Expected move: ±$7.27
Open interest (C / P): 295 / 21

COLB options summary

The COLB options chain for the May 21, 2027 expiration lists 4 call and 5 put contracts, with 223 days until expiration. Open interest stands at 295 calls and 21 puts, a put/call ratio of 0.07, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $30.00 strike is 32.8%, which implies the market expects a move of about ±$7.27 (25.6%) in Columbia Banking System stock by expiration.

The most open interest sits at the $30.00 call (189 contracts) and the $20.00 put (12 contracts).

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

COLB options chain · May 21, 2027

COLB 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
10	—	71.7%	8.79	7.40	10.50	20.00	0.00	1.35	0.40	58.0%	10	12
—	—	—	—	—	—	22.50	0.40	1.00	0.60	39.2%	—	1
26	5	41.7%	4.68	4.10	5.40	25.00	1.10	2.50	1.20	47.8%	1	4
COLB $28.37
189	9	32.4%	1.80	1.50	2.20	30.00	3.20	3.90	3.35	33.2%	1	3
70	4	29.3%	0.60	0.15	0.70	35.00	—	—	—	—	—	—
—	—	—	—	—	—	45.00	14.70	18.80	15.03	70.4%	—	1

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 COLB put/call ratio?

For the May 21, 2027 expiration, the COLB put/call ratio based on open interest is 0.07 (21 puts vs 295 calls), and 0.67 based on today's volume. A ratio above 1 means more puts than calls.

What is COLB's implied volatility?

At-the-money implied volatility for COLB options expiring May 21, 2027 is about 32.8%, an annualized estimate of how much the market expects Columbia Banking System stock to move.

How many COLB option expiration dates are there?

COLB has 4 listed expiration dates, from Oct 16, 2026 to May 21, 2027.

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.