ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
Position in TNDM — Tandem Diabetes Care Inc
CIK 1164508
BOSTON, MA
Position in TNDM
as of Mar 31, 2026
· filed May 14, 2026
Position Value
$3,710,468
+$726,618 QoQ
Shares Held
193,556
+42.6% QoQ
Ownership
0.282%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Dec 2020
7 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in TNDM Over Time
Shares Held
Position Value (USD)
Position in Medical Devices
Healthcare · as of Mar 31, 2026ARROWSTREET CAPITAL, LIMITED PARTNERSHIP holds $3,649,670,055 across 35 Medical Devices names. TNDM ranks #25 (0.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | BSX |
Boston Scientific Corp
|
13,891,668 | $871,702,167 | |
| 2 | ABT |
Abbott Laboratories
|
5,522,222 | $566,966,532 | |
| 3 | SYK |
Stryker Corp
|
1,555,638 | $511,167,090 | |
| 4 | MDT |
Medtronic plc
|
4,659,425 | $403,739,176 | |
| 5 | PODD |
Insulet Corp
|
1,229,928 | $258,088,091 | |
| 6 | DXCM |
Dexcom Inc
|
2,545,103 | $159,832,468 | |
| 7 | EW |
Edwards Lifesciences Corp
|
1,890,859 | $151,419,988 | |
| 8 | PEN |
Penumbra Inc
|
400,160 | $131,400,539 |
All Filings in TNDM
Export CSV
7 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $3,710,468 | 193,556 | Shares | Defined | 2026-05-14 | |
| 2025-12-31 | $2,983,850 | 135,753 | Shares | Defined | 2026-02-13 | |
| 2025-06-30 | $231,341 | 12,411 | Shares | Defined | 2025-08-13 | |
| 2022-06-30 | $6,623,301 | 111,899 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $1,103,708 | 9,491 | Shares | Defined | 2022-05-13 | |
| 2021-03-31 | $8,662,796 | 98,162 | Shares | Defined | 2021-05-14 | |
| 2020-12-31 | $11,011,237 | 115,084 | Shares | Defined | 2021-02-12 | |
| No filing history on record for this holder in this stock. | ||||||