Alto Neuroscience (ANRO) Options Chain

NYSE: ANROHealth CareBiotechnology: Pharmaceutical PreparationsUSD

24.37+0.34 (+1.41%)

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

Expiration date

Expiration: Apr 16, 2027
Days to expiration: 187
Share price: $24.37
Put/call ratio (OI): 8.72
Put/call ratio (volume): 66.25
ATM implied volatility: 63.2%
Expected move: ±$11.03
Open interest (C / P): 18 / 157

ANRO options summary

The ANRO options chain for the April 16, 2027 expiration lists 6 call and 7 put contracts, with 187 days until expiration. Open interest stands at 18 calls and 157 puts, a put/call ratio of 8.72, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $25.00 strike is 63.2%, which implies the market expects a move of about ±$11.03 (45.2%) in Alto Neuroscience stock by expiration.

The most open interest sits at the $50.00 call (11 contracts) and the $25.00 put (100 contracts).

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

ANRO options chain · April 16, 2027

ANRO 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
—	—	—	10.68	—	—	15.00	—	—	—	—	—	—
1	2	90.2%	14.70	7.30	11.50	17.50	0.25	4.90	1.30	91.2%	—	1
—	—	—	—	—	—	20.00	0.80	5.20	2.73	78.0%	50	0
—	—	—	—	—	—	22.50	2.20	6.50	3.00	79.1%	50	50
ANRO $24.37
—	—	—	—	—	—	25.00	3.20	6.30	5.39	63.2%	140	100
—	—	—	—	—	—	30.00	7.80	10.50	8.70	77.3%	24	5
1	—	78.8%	6.81	0.20	4.90	35.00	—	—	—	—	—	—
3	—	91.7%	7.50	0.30	4.90	40.00	15.20	18.50	12.00	68.2%	—	0
2	1	99.3%	2.00	0.00	4.90	45.00	—	—	—	—	—	—
11	1	107.7%	1.45	0.00	4.90	50.00	25.50	26.90	25.90	69.6%	1	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 ANRO put/call ratio?

For the April 16, 2027 expiration, the ANRO put/call ratio based on open interest is 8.72 (157 puts vs 18 calls), and 66.25 based on today's volume. A ratio above 1 means more puts than calls.

What is ANRO's implied volatility?

At-the-money implied volatility for ANRO options expiring April 16, 2027 is about 63.2%, an annualized estimate of how much the market expects Alto Neuroscience stock to move.

How many ANRO option expiration dates are there?

ANRO has 4 listed expiration dates, from Oct 16, 2026 to Apr 16, 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.