Skip to main content
Equibles

TWO SIGMA INVESTMENTS, LP

Position in TNDM — Tandem Diabetes Care Inc

CIK 1179392 NEW YORK, NY
Back to TNDM Full portfolio

Position in TNDM

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$8,426,391
-$27,310,207 QoQ
Shares Held
558,409
-70.0% QoQ
Ownership
0.803%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#34
of 274 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 97% Shared 0% None 3%

Common Shares in TNDM Over Time

Shares Held

Position Value (USD)

Derivatives in TNDM

reported options exposure · as of Dec 31, 2021
CallValue
$1,339,628
CallShares
8,900
PutValue
$677,340
PutShares
4,500

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

TWO SIGMA INVESTMENTS, LP holds $2,671,988,741 across 67 Medical Devices names. TNDM ranks #17 (0.3% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 BSX
Boston Scientific Corp
 19,359,023 $826,243,101
2 ABT
Abbott Laboratories
 8,126,315 $737,381,823
3 PODD
Insulet Corp
 1,903,734 $289,843,501
4 MDT
Medtronic plc
 3,240,847 $253,531,460
5 EW
Edwards Lifesciences Corp
 1,521,899 $137,670,983
6 PEN
Penumbra Inc
 428,128 $135,181,416
7 BRKR
Bruker Corp
 200,091 $45,941,097
8 ESTA
Establishment Labs Holdings Inc.
 448,425 $38,479,349

All Filings in TNDM

Export CSV
39 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $8,426,391 558,409
2026-03-31 $35,736,598 1,864,194
2025-12-31 $26,409,563 1,201,527
2025-09-30 $13,562,832 1,117,202
2025-06-30 $22,978,031 1,232,727
2025-03-31 $12,290,028 641,442
2024-12-31 $31,019,991 861,188
2024-09-30 $34,976,078 824,713
2024-06-30 $45,736,402 1,135,180
2024-03-31 $36,188,772 1,021,993
2023-12-31 $20,746,051 701,354
2023-09-30 $16,211,691 780,534
2023-06-30 $29,639,534 1,207,805
2023-03-31 $37,462,034 922,483
2022-12-31 $39,542,739 879,705
2022-09-30 $31,809,818 664,782
2022-06-30 $31,030,298 524,249
2022-03-31 $4,486,700 38,582
2021-12-31 $677,340 4,500
2021-12-31 $1,339,628 8,900
2021-09-30 $477,520 4,000
2021-09-30 $764,032 6,400
2021-06-30 $16,172,393 166,041
2021-06-30 $1,850,600 19,000
2021-06-30 $1,363,600 14,000
2021-03-31 $864,850 9,800
2021-03-31 $34,826,627 394,636
2021-03-31 $1,050,175 11,900
2020-12-31 $4,248,192 44,400
2020-12-31 $3,607,136 37,700
2020-09-30 $4,097,350 36,100
2020-09-30 $3,859,000 34,000
2020-09-30 $25,691,860 226,360
2020-06-30 $2,314,728 23,400
2020-06-30 $1,612,396 16,300
2020-06-30 $5,062,626 51,179
2020-03-31 $969,947 15,073
2020-03-31 $2,271,555 35,300
2020-03-31 $1,731,015 26,900