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Equibles

D. E. Shaw & Co., Inc.

Position in TNDM — Tandem Diabetes Care Inc

CIK 1009207 New York, NY
Back to TNDM Full portfolio

Position in TNDM

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$10,288,482
-$4,738,995 QoQ
Shares Held
681,808
-13.0% QoQ
Ownership
0.980%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#27
of 274 holders
Holding Since
Mar 2020
23 quarters on record
Voting authority Sole 94% Shared 0% None 6%

Common Shares in TNDM Over Time

Shares Held

Position Value (USD)

Derivatives in TNDM

reported options exposure · as of Dec 31, 2025
CallValue
$0
CallShares
0
PutValue
$1,538,600
PutShares
70,000

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Medical Devices

Healthcare · as of Jun 30, 2026

D. E. Shaw & Co., Inc. holds $2,449,763,142 across 60 Medical Devices names. TNDM ranks #18 (0.4% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 BSX
Boston Scientific Corp
 25,457,409 $1,086,522,216
2 MDT
Medtronic plc
 4,396,781 $343,960,176
3 ABT
Abbott Laboratories
 1,457,592 $132,261,897
4 STE
STERIS plc
 509,610 $107,308,577
5 BRKR
Bruker Corp
 340,853 $99,997,183
6 SYK
Stryker Corp
 270,554 $85,181,220
7 IRTC
iRhythm Holdings, Inc.
 629,686 $74,901,149
8 INSP
Inspire Medical Systems, Inc.
 1,470,462 $65,597,309

All Filings in TNDM

Export CSV
42 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $10,288,482 681,808
2026-03-31 $15,027,477 783,906
2025-12-31 $1,538,600 70,000
2025-12-31 $18,776,766 854,266
2025-09-30 $849,800 70,000
2025-09-30 $10,649,413 877,217
2025-06-30 $6,312,771 338,668
2024-12-31 $731,206 20,300
2024-12-31 $612,340 17,000
2024-03-31 $2,529,407 71,432
2023-12-31 $4,037,670 136,500
2023-12-31 $2,755,081 93,140
2023-09-30 $5,212,106 250,944
2023-09-30 $623,100 30,000
2023-06-30 $1,023,318 41,700
2023-06-30 $14,774,552 602,060
2023-03-31 $9,972,475 245,567
2022-12-31 $750,665 16,700
2022-12-31 $1,798,000 40,000
2022-12-31 $6,832,174 151,995
2022-09-30 $1,071,983 22,403
2022-09-30 $799,095 16,700
2022-06-30 $988,473 16,700
2022-06-30 $1,615,235 27,289
2022-03-31 $865,662 7,444
2022-03-31 $5,605,178 48,200
2021-12-31 $2,848,139 18,922
2021-12-31 $11,018,064 73,200
2021-09-30 $5,837,682 48,900
2021-09-30 $1,702,955 14,265
2021-06-30 $4,762,860 48,900
2021-06-30 $1,479,895 15,194
2021-03-31 $1,622,123 18,381
2021-03-31 $1,765,000 20,000
2020-12-31 $956,800 10,000
2020-12-31 $2,973,542 31,078
2020-09-30 $4,668,936 41,136
2020-09-30 $2,270,000 20,000
2020-09-30 $2,417,550 21,300
2020-06-30 $3,956,800 40,000
2020-06-30 $1,809,444 18,292
2020-03-31 $351,865 5,468