Millennium Management’s Tandem Diabetes Care TNDM Stock Holding History

Millennium Management’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
2024 Q4	–	Sell	-30,000	Closed	-$1.27M	–	6464
2024 Q3	$1.27M	Sell	30,000 -40,000	-57%	-$1.7M	﹤0.01%	4079
2024 Q2	$2.82M	Buy	70,000 +40,000	+133%	+$1.67M	﹤0.01%	3223
2024 Q1	$1.06M	Buy	30,000 +20,000	+200%	+$536K	﹤0.01%	4240
2023 Q4	$296K	Buy	+10,000	New	+$207K	﹤0.01%	4963
2023 Q3	–	Sell	-20,000	Closed	-$491K	–	6567
2023 Q2	$491K	Buy	+20,000	New	+$643K	﹤0.01%	4564

Other funds holding TNDM

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Sessa Capital New York $5.98B AUM 99.85% 1-Year Est. Return

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 Malvern, Pennsylvania $4.68T AUM

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 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 Florham Park, New Jersey $27.8B AUM 46.46% 1-Year Est. Return

Millennium Management's TNDM Position: Q2 2026 in Review

Millennium Management increased its Tandem Diabetes Care (TNDM) stake by 72% in Q2 2026, buying an estimated $9.61M and bringing the position to 1,311,739 shares worth $19.8M. The position accounts for 0.01% of the portfolio, ranked #1635.

Millennium Management first reported a position in TNDM in Q4 2013 and has held it in 47 quarters since. The position peaked at $75.4M in Q2 2020. 273 funds tracked by Wall St. Rank hold TNDM as of Q2 2026.

Millennium Management held 1,311,739 shares of Tandem Diabetes Care worth $19.8M as of Q2 2026.
Millennium Management bought 550,067 Tandem Diabetes Care shares in Q2 2026, an estimated $9.61M.
Tandem Diabetes Care made up 0.01% of Millennium Management's portfolio in Q2 2026, its #1635 holding.
Millennium Management first reported a position in Tandem Diabetes Care in Q4 2013 and has held it in 47 quarters since.
Millennium Management's Tandem Diabetes Care position peaked at $75.4M in Q2 2020.
273 funds tracked by Wall St. Rank held Tandem Diabetes Care as of Q2 2026.

Based on Millennium Management's 13F filing for Q2 2026, filed 14 Aug 2026.