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HealthStream HSTM

US equityMarket cap rank #3259Health Information Services
$32.10 +$0.79 (+2.52%)
Pre-market · Oct 8, 8:10 am ET · After hours $32.10 0.00%
Open$31.20
Prev close$31.31
Day range$31.20 – $32.42
Volume228.4K
Market cap$982.13M
P/E (TTM)44.6
Dividend yield0.41%

Average implied volatility across the listed chain right now: 142%. Implied volatility measures how big a price swing the options market is pricing in — there is no fixed “normal” level, it varies a lot by stock.

Open interest by strike

1518202325303540CallsPuts

Nearest listed expiry only. Calls above the line, puts below — clusters mark strikes where the market has built up the most open positions.

Implied volatility by strike

-39%117%273%428%152340CallsPuts

The “volatility smile”: strikes far from the current price often price in richer implied volatility than at-the-money strikes.

Calls

ExpiryStrikeLastBid/AskVolumeOpen interestIV
16 Oct 2026 $30.00 $2.25 $1.15/$2.60 5 5 0%
16 Oct 2026 $35.00 $0.10 $0.00/$1.40 2 32 43%
16 Oct 2026 $25.00 $6.33 $5.90/$9.50 0 15 164%
16 Oct 2026 $40.00 $0.00 $0.00/$0.75 0 0 48%
16 Oct 2026 $22.50 $8.83 $8.40/$12.00 0 0 212%
16 Oct 2026 $20.00 $11.32 $10.90/$14.50 0 0 264%
16 Oct 2026 $17.50 $13.82 $13.40/$17.00 0 0 322%
16 Oct 2026 $15.00 $16.32 $15.90/$19.50 0 0 389%

Puts

ExpiryStrikeLastBid/AskVolumeOpen interestIV
16 Oct 2026 $30.00 $0.47 $0.00/$0.75 0 1 67%
16 Oct 2026 $35.00 $3.77 $2.10/$4.10 0 0 55%
16 Oct 2026 $25.00 $0.00 $0.00/$0.75 0 1 61%
16 Oct 2026 $40.00 $8.69 $7.10/$9.10 0 0 106%
16 Oct 2026 $22.50 $0.00 $0.00/$0.75 0 0 65%
16 Oct 2026 $20.00 $0.00 $0.00/$1.40 0 0 85%
16 Oct 2026 $17.50 $0.00 $0.00/$0.75 0 0 108%
16 Oct 2026 $15.00 $0.00 $0.00/$1.40 0 0 134%

Open interest = contracts currently outstanding (not yet closed out). Higher open interest generally means a strike/expiry is more actively traded and easier to get in and out of.

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