Security key
875372203
TANDEM DIABETES CARE INC - Common Stock, par value $0.001 per share (TNDM)
CUSIP: 875372203
Q4 2025 13F Holders as of 31 Dec 2025
- Type / Class
- Equity / Common Stock, par value $0.001 per share
- Shares outstanding
- 68,947,349
- Total 13F shares
- 74,865,534
- Share change
- -507,386
- Total reported value
- $1,645,500,988
- Put/Call ratio
- 10%
- Price per share
- $21.98
- Number of holders
- 267
- Value change
- +$37,201,261
- Number of buys
- 131
- Number of sells
- 131
Report period
Q4 2025
Institutions
267
Top holders
10
TNDM full security history
Newer quarter: Q1 2026
Previous quarter: Q3 2025
TANDEM DIABETES CARE INC SEC filings
TANDEM DIABETES CARE INC company facts
Broader feeds
Reporting periods
Holder history for CUSIP 875372203
Recent filing periods:
Top shareholders of TNDM - TANDEM DIABETES CARE INC - Common Stock, par value $0.001 per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. |
13D/G
13F
|
Company |
15%
|
10,106,682
|
$176,563,735 | $0 | 31 Mar 2025 | |
| Sessa Capital (Master), L.P. |
13D/G
|
— |
6.7%
|
4,466,307
|
$78,026,383 | $0 | 31 Mar 2025 | |
| ArrowMark Colorado Holdings LLC |
13D/G
13F
|
Company |
4.3%
|
2,889,691
|
$62,272,841 | -$17,272,476 | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
10%
|
7,063,314
|
$85,748,632 | — | 30 Sep 2025 | |
| Sessa Capital IM, L.P. |
13F
|
Company |
7.3%
|
5,000,000
|
$60,700,000 | — | 30 Sep 2025 | |
| GW&K Investment Management, LLC |
13F
|
Company |
3.9%
|
2,721,649
|
$33,041,000 | — | 30 Sep 2025 | |
| STATE STREET CORP |
13F
|
Company |
3.9%
|
2,668,188
|
$32,391,802 | — | 30 Sep 2025 | |
| Hood River Capital Management LLC |
13F
|
Company |
3.7%
|
2,551,644
|
$30,976,958 | — | 30 Sep 2025 | |
| Paradice Investment Management LLC |
13F
|
Company |
3.2%
|
2,196,468
|
$26,665,122 | — | 30 Sep 2025 | |
| Freestone Grove Partners LP |
13F
|
Company |
2.7%
|
1,870,307
|
$22,705,527 | — | 30 Sep 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.3%
|
1,598,281
|
$19,406,140 | — | 30 Sep 2025 | |
| UBS Group AG |
13F
|
Company |
2.2%
|
1,504,377
|
$18,263,137 | — | 30 Sep 2025 | |
| JACOBS LEVY EQUITY MANAGEMENT, INC |
13F
|
Company |
2.1%
|
1,481,953
|
$17,990,909 | — | 30 Sep 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
2.1%
|
1,431,372
|
$17,376,856 | — | 30 Sep 2025 | |
| JENNISON ASSOCIATES LLC |
13F
|
Company |
2.1%
|
1,420,116
|
$17,240,209 | — | 30 Sep 2025 | |
| BARCLAYS PLC |
13F
|
Company |
1.7%
|
1,190,127
|
$14,448,141 | — | 30 Sep 2025 | |
| BAILLIE GIFFORD & CO |
13F
|
Company |
1.6%
|
1,120,595
|
$13,604,022 | — | 30 Sep 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
1.6%
|
1,117,202
|
$13,562,832 | — | 30 Sep 2025 | |
| TWO SIGMA ADVISERS, LP |
13F
|
Company |
1.4%
|
970,883
|
$11,786,520 | — | 30 Sep 2025 | |
| ACADIAN ASSET MANAGEMENT LLC |
13F
|
Company |
1.3%
|
918,723
|
$11,143,000 | — | 30 Sep 2025 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
1.3%
|
877,217
|
$10,649,415 | — | 30 Sep 2025 | |
| FMR LLC |
13F
|
Company |
1.3%
|
870,123
|
$10,563,290 | — | 30 Sep 2025 | |
| MORGAN STANLEY |
13F
|
Company |
1.1%
|
737,547
|
$8,953,819 | — | 30 Sep 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
1%
|
705,902
|
$8,569,650 | — | 30 Sep 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
1%
|
690,883
|
$8,387,319 | — | 30 Sep 2025 | |
| ROYAL BANK OF CANADA |
13F
|
Company |
0.99%
|
681,078
|
$8,267,000 | — | 30 Sep 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.95%
|
658,353
|
$7,992,406 | — | 30 Sep 2025 | |
| Connor, Clark & Lunn Investment Management Ltd. |
13F
|
Company |
0.89%
|
615,221
|
$7,468,783 | — | 30 Sep 2025 | |
| Aberdeen Group plc |
13F
|
Company |
0.87%
|
598,096
|
$7,260,885 | — | 30 Sep 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.81%
|
558,453
|
$6,779,619 | — | 30 Sep 2025 | |
| ROYCE & ASSOCIATES LP |
13F
|
Company |
0.74%
|
510,000
|
$6,191,400 | — | 30 Sep 2025 | |
| Nuveen, LLC |
13F
|
Company |
0.73%
|
502,610
|
$6,101,685 | — | 30 Sep 2025 | |
| Trexquant Investment LP |
13F
|
Company |
0.72%
|
497,720
|
$6,042,321 | — | 30 Sep 2025 | |
| Walleye Capital LLC |
13F
|
Company |
0.67%
|
463,376
|
$5,625,385 | — | 30 Sep 2025 | |
| Cubist Systematic Strategies, LLC |
13F
|
Company |
0.64%
|
439,158
|
$5,331,379 | — | 30 Sep 2025 | |
| FRONTIER CAPITAL MANAGEMENT CO LLC |
13F
|
Company |
0.6%
|
415,344
|
$5,042,278 | — | 30 Sep 2025 | |
| AQR CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.6%
|
415,145
|
$4,861,348 | — | 30 Sep 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.56%
|
384,134
|
$4,663,389 | — | 30 Sep 2025 | |
| BROWN CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.53%
|
363,352
|
$4,411,093 | — | 30 Sep 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0.52%
|
359,071
|
$4,359,121 | — | 30 Sep 2025 | |
| DAFNA Capital Management LLC |
13F
|
Company |
0.52%
|
355,208
|
$4,312,225 | — | 30 Sep 2025 | |
| EDMOND DE ROTHSCHILD HOLDING S.A. |
13F
|
Company |
0.48%
|
333,200
|
$4,045,048 | — | 30 Sep 2025 | |
| PRINCIPAL FINANCIAL GROUP INC |
13F
|
Company |
0.47%
|
326,701
|
$3,966,151 | — | 30 Sep 2025 | |
| Invesco Ltd. |
13F
|
Company |
0.44%
|
302,041
|
$3,666,778 | — | 30 Sep 2025 | |
| Gamma As Sector |
13F
|
Individual |
0.39%
|
269,542
|
$3,272,240 | — | 30 Sep 2025 | |
| PUBLIC SECTOR PENSION INVESTMENT BOARD |
13F
|
Company |
0.38%
|
263,564
|
$3,199,667 | — | 30 Sep 2025 | |
| Kent Lake PR LLC |
13F
|
Company |
0.36%
|
250,000
|
$3,035,000 | — | 30 Sep 2025 | |
| ENVESTNET ASSET MANAGEMENT INC |
13F
|
Company |
0.34%
|
236,332
|
$2,869,070 | — | 30 Sep 2025 | |
| ALGERT GLOBAL LLC |
13F
|
Company |
0.33%
|
226,886
|
$2,754,000 | — | 30 Sep 2025 | |
| ALLIANCEBERNSTEIN L.P. |
13F
|
Company |
0.32%
|
223,720
|
$2,715,961 | — | 30 Sep 2025 |
Institutional Holders of TANDEM DIABETES CARE INC - Common Stock, par value $0.001 per share (TNDM) as of Q4 2025
As of 31 Dec 2025,
TANDEM DIABETES CARE INC - Common Stock, par value $0.001 per share (TNDM) was held by
267 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
74,865,534 shares.
The largest 10 holders included
BlackRock, Inc., VANGUARD GROUP INC, Sessa Capital IM, L.P., ArrowMark Colorado Holdings LLC, GW&K Investment Management, LLC, STATE STREET CORP, CITADEL ADVISORS LLC, MORGAN STANLEY, Paradice Investment Management LLC, and JENNISON ASSOCIATES LLC.
This page lists
267
institutional shareholders reporting positions in this security
for the Q4 2025 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
251
Q4 2025 holders
267
Holder diff
16
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 Value $ | Q4 2025 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.