Tandem Diabetes Care Inc. (TNDM)
NASDAQ: TNDM
· Real-Time Price · USD
12.00
0.04 (0.33%)
At close: Sep 26, 2025, 3:59 PM
11.91
-0.75%
After-hours: Sep 26, 2025, 05:55 PM EDT
TNDM Option Overview
Overview for all option chains of TNDM. As of September 28, 2025, TNDM options have an IV of 165.12% and an IV rank of 136.92%. The volume is 155 contracts, which is 88.07% of average daily volume of 176 contracts. The volume put-call ratio is 0.15, indicating a bullish sentiment in the market.
Implied Volatility
Implied Volatility (30d)
165.12%IV Rank
100%Historical Volatility
54.12%IV Low
66% on Jan 22, 2025IV High
138.39% on Sep 23, 2025Open Interest (OI)
Today's Open Interest
11,418Put-Call Ratio
0.98Put Open Interest
5,658Call Open Interest
5,760Open Interest Avg (30-day)
10,209Today vs Open Interest Avg (30-day)
111.84%Option Volume
Today's Volume
155Put-Call Ratio
0.15Put Volume
20Call Volume
135Volume Avg (30-day)
176Today vs Volume Avg (30-day)
88.07%Option Chain Statistics
This table provides a comprehensive overview of all TNDM options grouped by their expiration dates.
| Expiration | Call Vol | Put Vol | P/C Vol | Call OI | Put OI | P/C OI | Implied Volatility | Max Pain |
| Oct 17, 2025 | 4 | 0 | 0 | 371 | 179 | 0.48 | 165.12% | 13 |
| Nov 21, 2025 | 84 | 20 | 0.24 | 1,929 | 1,331 | 0.69 | 126% | 14 |
| Jan 16, 2026 | 14 | 0 | 0 | 2,282 | 2,921 | 1.28 | 102.03% | 20 |
| Feb 20, 2026 | 31 | 0 | 0 | 402 | 90 | 0.22 | 80.47% | 12 |
| May 15, 2026 | 0 | 0 | 0 | 0 | 0 | 0 | 81.07% | 3 |
| Dec 18, 2026 | 0 | 0 | 0 | 0 | 0 | 0 | 3.76% | 97.5 |
| Jan 15, 2027 | 2 | 0 | 0 | 776 | 1,137 | 1.47 | 81.86% | 15 |