Kaiser Aluminum (KALU) Options Chain

NASDAQ: KALUIndustrialsMetal FabricationsUSD

151.51+1.77 (+1.18%)

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

After hours: 151.51 0.00%

Expiration date

Expiration: Oct 16, 2026
Days to expiration: 7
Share price: $151.51
Put/call ratio (OI): 4.02
Put/call ratio (volume): 0.53
ATM implied volatility: 66.5%
Expected move: ±$13.96
Open interest (C / P): 56 / 225

KALU options summary

The KALU options chain for the October 16, 2026 expiration lists 11 call and 6 put contracts, with 7 days until expiration. Open interest stands at 56 calls and 225 puts, a put/call ratio of 4.02, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $150.00 strike is 66.5%, which implies the market expects a move of about ±$13.96 (9.2%) in Kaiser Aluminum stock by expiration.

The most open interest sits at the $165.00 call (14 contracts) and the $150.00 put (207 contracts).

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

KALU options chain · October 16, 2026

KALU 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
0	2	65.8%	25.20	19.70	24.00	130.00	—	—	—	—	—	—
—	—	—	—	—	—	135.00	0.10	4.90	1.05	97.8%	—	1
—	—	—	—	—	—	140.00	0.00	4.90	2.20	77.8%	1	2
0	2	71.0%	14.19	6.70	10.00	145.00	0.00	4.90	1.70	57.7%	10	11
8	4	69.8%	3.85	2.35	7.00	150.00	0.80	4.90	2.55	63.2%	2	207
KALU $151.51
8	2	70.7%	5.20	0.90	4.80	155.00	—	—	—	—	—	—
9	1	62.2%	2.41	0.00	4.90	160.00	—	—	—	—	—	—
14	14	78.2%	2.18	0.00	4.90	165.00	11.50	14.90	8.40	62.5%	2	3
7	1	65.1%	0.52	0.00	1.75	170.00	16.00	20.30	12.90	82.4%	1	1
2	1	76.2%	5.60	0.00	1.75	175.00	—	—	—	—	—	—
5	1	117.8%	0.75	0.00	4.90	180.00	—	—	—	—	—	—
2	2	129.3%	3.20	0.00	4.90	185.00	—	—	—	—	—	—
1	—	140.1%	3.66	0.00	4.90	190.00	—	—	—	—	—	—

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 KALU put/call ratio?

For the October 16, 2026 expiration, the KALU put/call ratio based on open interest is 4.02 (225 puts vs 56 calls), and 0.53 based on today's volume. A ratio above 1 means more puts than calls.

What is KALU's implied volatility?

At-the-money implied volatility for KALU options expiring October 16, 2026 is about 66.5%, an annualized estimate of how much the market expects Kaiser Aluminum stock to move.

How many KALU option expiration dates are there?

KALU has 4 listed expiration dates, from Oct 16, 2026 to Mar 19, 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.