Funds Shorting Tandem Diabetes Care, Inc.
This page shows institutions, funds, and major shareholders that have reported short positions in their last reporting period. We consider put option positions to be short positions and include all institutions that have disclosed put options here. Green rows indicate new positions. Red rows indicate closed positions. Click the link icon to see the full transaction history.
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| File Date | Source | Investor | Type | Avg Price (Est) |
Shares | Δ Shares (%) |
Reported Value ($1000) |
Δ Value (%) |
Port Alloc (%) |
|
|---|---|---|---|---|---|---|---|---|---|---|
| 2025-08-18 | 13F | Wolverine Trading, Llc | Put | 10,700 | 203 | |||||
| 2025-08-27 | NP | JNL SERIES TRUST - JNL Multi-Manager Alternative Fund (A) | Short | -9,957 | 131.07 | -186 | 125.61 | |||
| 2025-08-26 | NP | EHLS - Even Herd Long Short ETF | Short | -6,408 | -119 | |||||
| 2025-08-14 | 13F | Jane Street Group, Llc | Put | 44,700 | -3.87 | 833 | -6.40 | |||
| 2025-07-22 | 13F | IMC-Chicago, LLC | Put | 0 | -100.00 | 0 | -100.00 | |||
| 2025-08-14 | 13F | Group One Trading, L.p. | Put | 109,000 | 2.54 | 2,032 | -0.25 | |||
| 2025-05-15 | 13F | Cubist Systematic Strategies, LLC | Put | 0 | -100.00 | 0 | ||||
| 2025-06-27 | NP | CVSIX - Calamos Market Neutral Income Fund Class A | Short | -188,298 | -17.52 | -3,173 | -62.51 | |||
| 2025-08-13 | 13F | Walleye Capital LLC | Put | 7,800 | 145 | |||||
| 2025-08-27 | 13F/A | Squarepoint Ops LLC | Put | 0 | -100.00 | 0 | -100.00 | |||
| 2025-08-05 | 13F | Simplex Trading, Llc | Put | 14,900 | 351.52 | 0 | ||||
| 2025-06-26 | NP | SMNCX - Steward Equity Market Neutral Fund Class C | Short | -1,900 | -0.00 | -32 | -54.29 | |||
| 2025-08-14 | 13F | Citadel Advisors Llc | Put | 38,000 | -32.26 | 708 | -34.08 | |||
| 2025-08-13 | 13F | Walleye Trading LLC | Put | 7,000 | 130 | |||||
| 2025-08-12 | 13F | Proequities, Inc. | Put | 0 | 0 | |||||
| 2025-05-15 | 13F | D. E. Shaw & Co., Inc. | Put | 0 | -100.00 | 0 | -100.00 | |||
| 2025-08-14 | NP | FLSPX - SPECTRUM FUND Retail Class | Short | -1,001 | -115.08 | -19 | -106.74 | |||
| 2025-07-23 | NP | FAAAX - Franklin K2 Alternative Strategies Fund Class A | Short | -2,854 | -104.80 | -57 | -104.75 | |||
| 2025-06-27 | NP | PASIX - PACE Alternative Strategies Investments Class A | Short | -694 | -96.47 | -12 | -98.49 | |||
| 2025-08-14 | 13F | Susquehanna International Group, Llp | Put | 25,700 | -54.03 | 479 | -55.28 |
