Cubist Systematic Strategies’s Tandem Diabetes Care TNDM Stock Holding History

Cubist Systematic Strategies’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
2025 Q1	–	Sell	-6,800	Closed	-$245K	–	3536
2024 Q4	$245K	Sell	6,800 -11,200	-62%	-$379K	﹤0.01%	2488
2024 Q3	$763K	Buy	18,000 +10,300	+134%	+$437K	﹤0.01%	1991
2024 Q2	$310K	Sell	7,700 -39,900	-84%	-$1.66M	﹤0.01%	2339
2024 Q1	$1.69M	Buy	47,600 +13,800	+41%	+$370K	0.01%	1786
2023 Q4	$1,000K	Buy	33,800 +10,400	+44%	+$216K	0.01%	2062
2023 Q3	$486K	Buy	23,400 +13,300	+132%	+$365K	﹤0.01%	2337
2023 Q2	$248K	Buy	+10,100	New	+$325K	﹤0.01%	2709
2023 Q1	–	Sell	-29,400	Closed	-$1.32M	–	4423
2022 Q4	$1.32M	Sell	29,400 -2,900	-9%	-$131K	0.01%	2203
2022 Q3	$1.55M	Buy	32,300 +26,300	+438%	+$1.44M	0.01%	2244
2022 Q2	$355K	Buy	+6,000	New	+$493K	﹤0.01%	3317

Other funds holding TNDM

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Sessa Capital New York $5.51B AUM 47.23% 1-Year Est. Return

ACH

ArrowMark Colorado Holdings Denver, Colorado $3.76B AUM 21.77% 1-Year Est. Return

GKIM

GW&K Investment Management Boston, Massachusetts $11.3B AUM 31.98% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

HRCM

Hood River Capital Management Palm Beach Gardens, Florida $9.98B AUM 145.42% 1-Year Est. Return

PIM

Paradice Investment Management Denver, Colorado $532M AUM 29.6% 1-Year Est. Return

FGP

Freestone Grove Partners San Francisco, California $14.2B AUM 24.58% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Cubist Systematic Strategies's TNDM Position: Q3 2025 in Review

Cubist Systematic Strategies opened a new position in Tandem Diabetes Care (TNDM) in Q3 2025: 439,158 shares worth $5.33M. The stake represents 0.03% of the portfolio and ranks #926 among its holdings. This is a return to the name: Cubist Systematic Strategies previously reported a position in TNDM as recently as Q4 2024.

Cubist Systematic Strategies first reported a position in TNDM in Q1 2015 and has held it in 29 quarters since. The position peaked at $19.9M in Q2 2022. 255 funds tracked by Wall St. Rank hold TNDM as of Q3 2025.

Cubist Systematic Strategies held 439,158 shares of Tandem Diabetes Care worth $5.33M as of Q3 2025.
Tandem Diabetes Care was a new Cubist Systematic Strategies position in Q3 2025.
Tandem Diabetes Care made up 0.03% of Cubist Systematic Strategies's portfolio in Q3 2025, its #926 holding.
Cubist Systematic Strategies first reported a position in Tandem Diabetes Care in Q1 2015 and has held it in 29 quarters since.
Cubist Systematic Strategies's Tandem Diabetes Care position peaked at $19.9M in Q2 2022.
255 funds tracked by Wall St. Rank held Tandem Diabetes Care as of Q3 2025.

Based on Cubist Systematic Strategies's 13F filing for Q3 2025, filed 14 Nov 2025.