Holocene Advisors
TNDM icon

Holocene Advisors’s Tandem Diabetes Care TNDM Stock Holding History

Holocene Advisors’s Portfolio TNDM Stock Details TNDM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$4.04M Sell
267,860
-209,499
-44% -$3.66M 0.01% 461
2026
Q1 		$9.15M Buy
477,359
+460,941
+2,808% +$10M 0.02% 325
2025
Q4 		$361K Buy
+16,418
New +$296K ﹤0.01% 693
2024
Q2 		– Sell
-104,080
Closed -$3.69M – 855
2024
Q1 		$3.69M Buy
+104,080
New +$2.79M 0.01% 466

Other funds holding TNDM

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
SC
Sessa Capital New York $5.98B AUM 99.85% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
FLAM
First Light Asset Management Edina, Minnesota $1.65B AUM 203.21% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
GKIM
GW&K Investment Management Boston, Massachusetts $12.8B AUM 48.82% 1-Year Est. Return
Jennison Associates
Jennison Associates New York $167B AUM 44.17% 1-Year Est. Return
PIM
Paradice Investment Management Denver, Colorado $627M AUM 43.41% 1-Year Est. Return
Jacobs Levy Equity Management
Jacobs Levy Equity Management Florham Park, New Jersey $27.8B AUM 46.46% 1-Year Est. Return

Holocene Advisors's TNDM Position: Q2 2026 in Review

Holocene Advisors reduced its Tandem Diabetes Care (TNDM) stake by 44% in Q2 2026, selling an estimated $3.66M and leaving 267,860 shares worth $4.04M. The position accounts for 0.01% of the portfolio, ranked #461.

Holocene Advisors first reported a position in TNDM in Q1 2024 and has held it in 4 quarters since. The position peaked at $9.15M in Q1 2026. 274 funds tracked by Wall St. Rank hold TNDM as of Q2 2026.

  • Holocene Advisors held 267,860 shares of Tandem Diabetes Care worth $4.04M as of Q2 2026.
  • Holocene Advisors sold 209,499 Tandem Diabetes Care shares in Q2 2026, an estimated $3.66M.
  • Tandem Diabetes Care made up 0.01% of Holocene Advisors's portfolio in Q2 2026, its #461 holding.
  • Holocene Advisors first reported a position in Tandem Diabetes Care in Q1 2024 and has held it in 4 quarters since.
  • Holocene Advisors's Tandem Diabetes Care position peaked at $9.15M in Q1 2026.
  • 274 funds tracked by Wall St. Rank held Tandem Diabetes Care as of Q2 2026.

Based on Holocene Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.