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BSX Options Chain by Expiration – Open Interest & Put/Call Ratio

Explore the BSX options chain aggregated by expiration date, with call and put open interest, total OI and put/call ratios. Use this overview to spot where options positioning is most concentrated and which expirations carry bullish, bearish or neutral sentiment for BSX.

Market Sentiment from BSX Options by Expiration Date

The table below aggregates BSX options data by expiration date, including call volume, put volume, total open interest and the put/call ratio. Each row is assigned a sentiment label and numerical sentiment score, highlighting expirations where positioning is extremely bullish, defensive or balanced. Click on an expiration date to drill down into the detailed options chain for that maturity.

Expiration Date Call OI Put OI Total Open Interest Put/Call Ratio
2025-12-26 2067 1376 3443 0.666
2026-01-02 1343 1728 3071 1.287
2026-01-09 1176 1186 2362 1.009
2026-01-16 45292 46248 91540 1.021
2026-01-23 216 6809 7025 31.523
2026-01-30 485 56 541 0.115
2026-02-20 19328 6133 25461 0.317
2026-03-20 12619 9312 21931 0.738
2026-05-15 4327 1110 5437 0.257
2026-06-18 15000 8269 23269 0.551
2026-08-21 7 0 7 0.000
2026-09-18 1190 1186 2376 0.997
2026-12-18 1976 2367 4343 1.198
2027-01-15 9257 4445 13702 0.480
2027-06-17 1753 125 1878 0.071
2028-01-21 414 59 473 0.143

How the Options Sentiment Score Is Calculated

This sentiment framework evaluates market bias for BSX based on aggregated options data by expiration date. The key metrics are:

  • Put/Call Ratio (PCR): Compares put and call activity. A higher PCR usually indicates more defensive or bearish positioning, while a lower PCR suggests bullish call demand.
  • Open Interest (OI): Represents the number of outstanding option contracts. Higher open interest reflects strong market attention, hedging activity or speculative positioning around BSX.
  • Unusual activity ⚠️: Expirations with extreme PCR or unusually high OI are flagged with a warning icon, signaling concentrated bets, hedging pressure or potential event-driven risk.

The sentiment score combines PCR and OI into a 0–100 scale, then classifies each expiration into intuitive labels such as Strong Bullish, Moderate Bullish, Neutral, Moderate Bearish, Strong Bearish. Higher scores reflect more aggressive bullish positioning in BSX options, while lower scores highlight more defensive or bearish structures.