TANDEM DIABETES CARE INC (TNDM) Options Volume

516 TANDEM DIABETES CARE INC (TNDM) option contracts changed hands in the latest session, at a put/call volume ratio of 0.02. This page tracks how actively TNDM options trade — contracts and dollars — and flags individual contracts running far above their own 30-day average volume.

Data as of Aug 24, 2026, 3:55 PM ET · OPRA data 15 minutes delayed · For information only — not investment advice.

Last close
$22.28
52-week range
$11.79 – $28.27
ATM IV (30d)
59.5%
IV rank
17 / 100
Low
Expected move
±$3.47 (±15.6%)
Put/call OI
0.30
Call-heavy
Max pain
$15
↓ 32.7% below close
Next earnings
Nov 3, 2026

Options Volume & Premium Flow

Total options volume516
Call volume506
Put volume10
Put/call volume ratio0.02
Listed contracts272
Call premium traded$24.13K
Put premium traded$3.3K
Premium put/call ratio0.14
Open interest rank (31 day)0 / 100

TNDM Options Volume Trend

02.3K4.7K7K9.4KFeb '26May '26Aug '26

TNDM total options volume per session, past year.

0.008.9817.9726.9535.93Feb '26May '26Aug '26

TNDM put/call volume ratio, past year.

TNDM Unusual Options Activity

No TNDM contract currently trades at 3× its 30-day average volume with at least 500 contracts — nothing clears OptiView's unusual-activity bar today.

With a put/call volume ratio of 0.02, today's trading is tilted toward calls. Measured in dollars rather than contracts, $24.13K of call premium and $3.3K of put premium changed hands — the larger premium flow is on the call side.

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TNDM Options FAQ

How many TNDM options traded today?

516 TNDM option contracts traded as of Aug 24, 2026 — 506 calls and 10 puts.

Is there unusual options activity in TNDM today?

No TNDM contract currently clears OptiView's unusual-activity bar as of Aug 24, 2026, which requires at least 3× the contract's 30-day average volume and 500 contracts traded.

Methodology. IV rank compares the current 30-day at-the-money implied volatility with its highest and lowest values over the past 52 weeks. Max pain is the strike that minimizes the total payout to option holders at expiration. The call and put walls are the strikes carrying the largest call and put open interest across all expirations. Net gamma exposure (GEX) is measured from the dealer perspective. All statistics are derived from delayed OPRA options data.

Options trading involves significant risk, and losses can exceed your initial investment. Always consult a licensed financial professional before making investment decisions. OptiView does not provide financial advice; all figures on this page are descriptive statistics, not recommendations.