Middlesex Water (MSEX) Options Chain
NASDAQ: MSEXUtilitiesWater SupplyUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Dec 18, 2026
- Days to expiration
- 68
- Share price
- $53.43
- Put/call ratio (OI)
- 0.06
- Put/call ratio (volume)
- 13.17
- Expected move
- ±$10.41
- Open interest (C / P)
- 314 / 19
MSEX options summary
The MSEX options chain for the December 18, 2026 expiration lists 6 call and 5 put contracts, with 68 days until expiration. Open interest stands at 314 calls and 19 puts, a put/call ratio of 0.06, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $55.00 strike is 45.1%, which implies the market expects a move of about ±$10.41 (19.5%) in Middlesex Water stock by expiration.
The most open interest sits at the $60.00 call (148 contracts) and the $45.00 put (10 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
MSEX options chain · December 18, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 30.00 | 0.00 | 0.00 | 0.25 | |||||
| — | — | — | 40.00 | 0.00 | 5.00 | 1.00 | |||||
| 16.49 | 0.00 | 0.00 | 45.00 | 0.00 | 0.90 | 0.60 | |||||
| 4.85 | 2.20 | 7.00 | 50.00 | 0.10 | 5.00 | 0.95 | |||||
| 2.10 | 0.00 | 3.50 | 55.00 | — | — | — | |||||
| 0.30 | 0.00 | 5.00 | 60.00 | 5.00 | 9.50 | 5.52 | |||||
| 0.15 | 0.00 | 5.00 | 75.00 | — | — | — | |||||
| 0.45 | 0.00 | 1.00 | 80.00 | — | — | — | |||||
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 MSEX put/call ratio?
For the December 18, 2026 expiration, the MSEX put/call ratio based on open interest is 0.06 (19 puts vs 314 calls), and 13.17 based on today's volume. A ratio above 1 means more puts than calls.
What is MSEX's implied volatility?
At-the-money implied volatility for MSEX options expiring December 18, 2026 is about 45.1%, an annualized estimate of how much the market expects Middlesex Water stock to move.
How many MSEX option expiration dates are there?
MSEX 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.