Tandem Diabetes Care Inc
TNDM- Exchange
- Nasdaq
- Industry
- Surgical & Medical Instruments & Apparatus
- SEC CIK
- 0001438133
No open-market purchases or sales by Tandem Diabetes Care Inc insiders were filed in the last 90 days; 274 institutions reported holding it in 13F filings for Q2 2026, worth $1.19B in total; no superinvestor holds it.
13F holders, Q2 2024
Institutional positions in Tandem Diabetes Care Inc as of Jun 30, 2024. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 317
- +29 vs. Q1 2024
- Shares held
- 73.6M
- −425.3K (−0.6%) vs. Q1 2024
- Total value
- $2.96B
- +$343.5M (+13.1%) vs. Q1 2024
- New holders
- 64
- 124 more added
- Sold out
- 35
- 91 more reduced
3 institutions that held it in Q1 2024 haven't filed for Q2 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2024: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting TNDM on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 274 | $1.19B |
| Q1 2026 | 274 | $1.51B |
| Q4 2025 | 269 | $1.65B |
| Q3 2025 | 255 | $911.3M |
| Q2 2025 | 271 | $1.51B |
| Q1 2025 | 275 | $1.40B |
| Q4 2024 | 316 | $2.60B |
| Q3 2024 | 332 | $3.10B |
| Q2 2024 | 317 | $2.96B |
| Q1 2024 | 291 | $2.63B |
| Q4 2023 | 268 | $2.10B |
| Q3 2023 | 226 | $1.45B |
| Q2 2023 | 247 | $1.65B |
| Q1 2023 | 274 | $2.77B |
| Q4 2022 | 295 | $2.89B |
| Q3 2022 | 299 | $3.00B |
| Q2 2022 | 331 | $3.64B |
| Q1 2022 | 379 | $6.92B |
| Q4 2021 | 388 | $9.09B |
| Q3 2021 | 338 | $7.32B |
| Q2 2021 | 303 | $5.75B |
| Q1 2021 | 290 | $5.08B |
Institutions, Q2 2024
Shares, value and share of portfolio for each institution holding Tandem Diabetes Care Inc; share changes are against Q1 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Two Sigma Investments, LP | 1,135,180 | $45.7M | 0.11% | +113,187+11.1% | Added |
| Stephens Investment Management Group LLC | 1,136,219 | $45.8M | 0.64% | +173,660+18.0% | Added |
| Jacobs Levy Equity Management, Inc | 1,244,140 | $50.1M | 0.21% | +24,946+2.0% | Added |
| GW&K Investment Management, LLC | 1,343,111 | $54.1M | 0.49% | +37,202+2.8% | Added |
| Janus Henderson Group PLC | 1,450,175 | $58.4M | 0.03% | −750,622−34.1% | Reduced |
| Ameriprise Financial Inc | 1,480,774 | $59.6M | 0.02% | +688,746+87.0% | Added |
| Geode Capital Management, LLC | 1,507,629 | $60.8M | 0.01% | +431,532+40.1% | Added |
| Bellevue Group AG | 1,543,267 | $62.2M | 1.01% | −488,621−24.0% | Reduced |
| Champlain Investment Partners, LLC | 1,629,527 | $65.7M | 0.40% | +115,970+7.7% | Added |
| Citadel Advisors LLC | 1,808,741 | $72.9M | 0.07% | +1,241,673+219.0% | Added |
| Jennison Associates LLC | 1,969,626 | $79.4M | 0.05% | −586,498−22.9% | Reduced |
| Fred Alger Management, LLC | 2,174,107 | $87.6M | 0.43% | +677,036+45.2% | Added |
| ArrowMark Colorado Holdings LLC | 2,504,851 | $100.9M | 1.20% | −429,328−14.6% | Reduced |
| State Street Corp | 2,572,564 | $103.6M | 0.00% | +331,586+14.8% | Added |
| Capital World Investors | 3,665,300 | $147.7M | 0.02% | 00.0% | Unchanged |
| Vanguard Group Inc | 7,378,002 | $297.3M | 0.01% | +325,432+4.6% | Added |
| BlackRock Inc. | 11,122,903 | $448.1M | 0.01% | +1,890,422+20.5% | Added |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −339,918−100.0% | Sold out |
| Tri Locum Partners LP | 0 | $0 | 0.00% | −326,506−100.0% | Sold out |
| Integral Health Asset Management, LLC | 0 | $0 | 0.00% | −225,000−100.0% | Sold out |
| Holocene Advisors, LP | 0 | $0 | 0.00% | −104,080−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −96,300−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −71,432−100.0% | Sold out |
| Capital Fund Management S.A. | 0 | $0 | 0.00% | −61,870−100.0% | Sold out |
| Texas Permanent School Fund | 0 | $0 | 0.00% | −56,910−100.0% | Sold out |
| Lecap Asset Management Ltd | 0 | $0 | 0.00% | −52,653−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −35,000−100.0% | Sold out |
| Allianz Asset Management GmbH | 0 | $0 | 0.00% | −29,429−100.0% | Sold out |
| Treasurer of the State of North Carolina | 0 | $0 | 0.00% | −28,773−100.0% | Sold out |
| Point72 (DIFC) Ltd | 0 | $0 | 0.00% | −27,551−100.0% | Sold out |
| Duality Advisers, LP | 0 | $0 | 0.00% | −26,542−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −25,028−100.0% | Sold out |
| Public Employees Retirement System of Ohio | 0 | $0 | 0.00% | −24,656−100.0% | Sold out |
| Teza Capital Management LLC | 0 | $0 | 0.00% | −24,278−100.0% | Sold out |
| Bayesian Capital Management, LP | 0 | $0 | 0.00% | −24,000−100.0% | Sold out |
| Bokf, NA | 0 | $0 | 0.00% | −23,817−100.0% | Sold out |
| Quarry LP | 0 | $0 | 0.00% | −19,065−100.0% | Sold out |
| Healthcare of Ontario Pension Plan Trust Fund | 0 | $0 | 0.00% | −15,239−100.0% | Sold out |
| Capstone Investment Advisors, LLC | 0 | $0 | 0.00% | −13,585−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −12,722−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −12,087−100.0% | Sold out |
| Oak Thistle LLC | 0 | $0 | 0.00% | −8,557−100.0% | Sold out |
| JustInvest LLC | 0 | $0 | 0.00% | −5,654−100.0% | Sold out |
| American International Group, Inc. | 0 | $0 | 0.00% | −3,628−100.0% | Sold out |
| Fernwood Investment Management, LLC | 0 | $0 | 0.00% | −1,625−100.0% | Sold out |
| CoreCap Advisors, LLC | 0 | $0 | 0.00% | −1,053−100.0% | Sold out |
| Point72 Asia (Singapore) Pte. Ltd. | 0 | $0 | 0.00% | −435−100.0% | Sold out |
| Anfield Capital Management, LLC | 0 | $0 | 0.00% | −73−100.0% | Sold out |
| Steward Partners Investment Advisory, LLC | 0 | $0 | 0.00% | −70−100.0% | Sold out |
| Westend Capital Management, LLC | 0 | $0 | 0.00% | −27−100.0% | Sold out |
| Elequin Capital LP | 0 | $0 | 0.00% | −7−100.0% | Sold out |
| MV Capital Management, Inc. | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Credit Suisse AG | – | – | – | – | Not filed |
| Shell Asset Management Co | – | – | – | – | Not filed |
| Cambridge Trust Co | – | – | – | – | Not filed |