Ribbon Communications (RBBN) Options Chain

NASDAQ: RBBNTechnologyEDP ServicesUSD

1.72-0.12 (-6.52%)

At close: Oct 8, 4:00 PM ET · Delayed 15 min

After hours: 1.81 +5.37%

Expiration date

Expiration: Oct 16, 2026
Days to expiration: 8
Share price: $1.72
Put/call ratio (OI): 0.03
Put/call ratio (volume): 0.53
ATM implied volatility: 175.0%
Expected move: ±$0.4456
Open interest (C / P): 2.33K / 64

RBBN options summary

The RBBN options chain for the October 16, 2026 expiration lists 3 call and 3 put contracts, with 8 days until expiration. Open interest stands at 2,333 calls and 64 puts, a put/call ratio of 0.03, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $2.50 strike is 175.0%, which implies the market expects a move of about ±$0.4456 (25.9%) in Ribbon Communications stock by expiration.

The most open interest sits at the $5.00 call (1.87K contracts) and the $2.50 put (59 contracts).

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

RBBN options chain · October 16, 2026

RBBN 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
RBBN $1.72
362	1	181.3%	0.04	0.00	0.05	2.50	0.35	1.25	0.71	168.8%	4	59
1,869	15	381.3%	0.07	0.00	0.05	5.00	2.40	3.60	3.00	760.9%	5	5
102	1	668.8%	0.05	0.00	0.25	7.50	5.10	6.30	5.70	1076.6%	—	0

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 RBBN put/call ratio?

For the October 16, 2026 expiration, the RBBN put/call ratio based on open interest is 0.03 (64 puts vs 2,333 calls), and 0.53 based on today's volume. A ratio above 1 means more puts than calls.

What is RBBN's implied volatility?

At-the-money implied volatility for RBBN options expiring October 16, 2026 is about 175.0%, an annualized estimate of how much the market expects Ribbon Communications stock to move.

How many RBBN option expiration dates are there?

RBBN has 3 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.