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JANE STREET GROUP, LLC

Position in TNDM — Tandem Diabetes Care Inc

CIK 1595888 NEW YORK, NY

Position in TNDM

as of Mar 31, 2026 · filed May 12, 2026
Position Value
$0
-$4,615,249 QoQ
Shares Held
0
-100.0% QoQ
Ownership
0.000%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
25 quarters on record

Common Shares in TNDM Over Time

Shares Held

Position Value (USD)

Derivatives in TNDM

reported options exposure · as of Mar 31, 2026
CallValue
$665,199
CallShares
34,700
PutValue
$1,359,153
PutShares
70,900

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 Mar 31, 2026

JANE STREET GROUP, LLC holds $517,213,376 across 57 Medical Devices names.

# Ticker Company Shares Value (USD) Open

All Filings in TNDM

Export CSV
50 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $1,359,153 70,900
2026-03-31 $665,199 34,700
2025-12-31 $4,615,249 209,975
2025-12-31 $472,570 21,500
2025-12-31 $1,224,286 55,700
2025-09-30 $2,638,155 217,311
2025-09-30 $542,658 44,700
2025-06-30 $493,960 26,500
2025-06-30 $1,679,613 90,108
2025-06-30 $833,208 44,700
2025-03-31 $890,940 46,500
2025-03-31 $607,372 31,700
2024-12-31 $1,125,659 31,251
2024-12-31 $3,756,886 104,300
2024-09-30 $5,886,508 138,800
2024-09-30 $4,893,561 115,387
2024-09-30 $2,226,525 52,500
2024-06-30 $2,727,430 67,695
2024-03-31 $10,909,784 308,099
2023-12-31 $5,640,639 190,691
2023-09-30 $970,145 46,709
2023-06-30 $997,992 40,668
2023-03-31 $1,486,894 36,614
2022-12-31 $1,977,260 43,988
2022-09-30 $2,119,371 44,292
2022-06-30 $2,159,309 36,481
2022-03-31 $2,872,363 24,700
2022-03-31 $2,047,982 17,611
2022-03-31 $6,163,370 53,000
2021-12-31 $918,172 6,100
2021-12-31 $1,638,409 10,885
2021-12-31 $13,170,500 87,500
2021-09-30 $4,918,456 41,200
2021-09-30 $2,817,368 23,600
2021-06-30 $1,412,300 14,500
2021-06-30 $8,804,960 90,400
2021-06-30 $1,932,902 19,845
2021-03-31 $2,162,125 24,500
2021-03-31 $10,404,675 117,900
2021-03-31 $1,241,765 14,071
2020-12-31 $2,045,638 21,380
2020-12-31 $22,140,352 231,400
2020-12-31 $6,056,544 63,300
2020-09-30 $4,254,093 37,481
2020-09-30 $5,357,200 47,200
2020-09-30 $32,449,650 285,900
2020-06-30 $15,985,472 161,600
2020-06-30 $5,697,792 57,600
2020-06-30 $16,684,044 168,662
2020-03-31 $596,588 9,271