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	-8,500	Closed	-$306K	–	3534
2024 Q4	$306K	Sell	8,500 -1,900	-18%	-$64.3K	﹤0.01%	2396
2024 Q3	$441K	Sell	10,400 -1,900	-15%	-$80.6K	﹤0.01%	2263
2024 Q2	$496K	Sell	12,300 -41,400	-77%	-$1.73M	﹤0.01%	2130
2024 Q1	$1.9M	Buy	53,700 +11,200	+26%	+$300K	0.01%	1683
2023 Q4	$1.26M	Buy	42,500 +4,600	+12%	+$95.4K	0.01%	1870
2023 Q3	$787K	Buy	37,900 +27,100	+251%	+$744K	0.01%	2036
2023 Q2	$265K	Buy	10,800 +2,100	+24%	+$67.6K	﹤0.01%	2685
2023 Q1	$353K	Sell	8,700 -1,300	-13%	-$53.8K	﹤0.01%	2879
2022 Q4	$450K	Buy	10,000 +2,800	+39%	+$127K	﹤0.01%	3101
2022 Q3	$345K	Buy	+7,200	New	+$395K	﹤0.01%	3438

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.