Position in TNDM
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$27,652,186
+$8,408,017 QoQ
Shares Held
1,442,472
+64.8% QoQ
Ownership
2.10%
of shares outstanding
% of Portfolio
0.04%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Jun 2020
18 quarters on record
Voting authority
Sole 0.ToString("F0")%
Shared 100.ToString("F0")%
None 0.ToString("F0")%
Common Shares in TNDM Over Time
Shares Held
Position Value (USD)
Position in Medical Devices
Healthcare · as of Mar 31, 2026MARSHALL WACE, LLP holds $1,200,961,606 across 58 Medical Devices names. TNDM ranks #7 (2.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | BSX |
Boston Scientific Corp
|
3,611,020 | $226,591,504 | |
| 2 | SYK |
Stryker Corp
|
630,236 | $207,089,246 | |
| 3 | ABT |
Abbott Laboratories
|
2,010,938 | $206,463,003 | |
| 4 | EW |
Edwards Lifesciences Corp
|
1,996,377 | $159,869,868 | |
| 5 | PODD |
Insulet Corp
|
606,482 | $127,264,182 | |
| 6 | GMED |
Globus Medical Inc
|
562,630 | $48,476,200 | |
| 7 | TNDM |
Tandem Diabetes Care Inc
This page
|
1,442,472 | $27,652,186 | |
| 8 | HAE |
Haemonetics Corp
|
320,010 | $18,035,762 |
All Filings in TNDM
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18 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $27,652,186 | 1,442,472 | Shares | Other | 2026-05-15 | |
| 2025-12-31 | $19,244,169 | 875,531 | Shares | Other | 2026-02-13 | |
| 2025-03-31 | $1,348,844 | 70,399 | Shares | Other | 2025-05-15 | |
| 2024-12-31 | $34,253,145 | 950,948 | Shares | Other | 2025-02-13 | |
| 2024-09-30 | $34,504,521 | 813,594 | Shares | Other | 2024-11-14 | |
| 2024-06-30 | $21,127,793 | 524,393 | Shares | Other | 2024-08-14 | |
| 2024-03-31 | $110,492,443 | 3,120,374 | Shares | Other | 2024-05-15 | |
| 2023-12-31 | $10,409,645 | 351,915 | Shares | Other | 2024-02-14 | |
| 2023-09-30 | $3,718,660 | 179,040 | Shares | Other | 2023-11-14 | |
| 2023-06-30 | $16,126,730 | 657,161 | Shares | Other | 2023-08-14 | |
| 2022-12-31 | $39,614,749 | 881,307 | Shares | Other | 2023-02-14 | |
| 2022-03-31 | $2,872,711 | 24,703 | Shares | Other | 2022-05-16 | |
| 2021-12-31 | $12,098,195 | 80,376 | Shares | Other | 2022-02-14 | |
| 2021-09-30 | $1,886,681 | 15,804 | Shares | Sole | 2021-11-15 | |
| 2021-03-31 | $423,158 | 4,795 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $396,976 | 4,149 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $1,513,295 | 13,333 | Shares | Sole | 2020-11-16 | |
| 2020-06-30 | $978,318 | 9,890 | Shares | Sole | 2020-08-13 | |
| No filing history on record for this holder in this stock. | ||||||