Fox Run Management’s Tandem Diabetes Care TNDM Stock Holding History

Fox Run 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
2026 Q2	$611K	Buy	+40,462	New	+$707K	0.1%	394
2026 Q1	–	Sell	-11,398	Closed	-$251K	–	1238
2025 Q4	$251K	Buy	+11,398	New	+$206K	0.04%	749
2025 Q3	–	Sell	-31,516	Closed	-$587K	–	1241
2025 Q2	$587K	Buy	+31,516	New	+$624K	0.1%	398
2023 Q3	–	Sell	-10,963	Closed	-$269K	–	999
2023 Q2	$269K	Buy	+10,963	New	+$353K	0.08%	487
2022 Q3	–	Sell	-4,151	Closed	-$246K	–	825
2022 Q2	$246K	Buy	+4,151	New	+$341K	0.12%	365
2021 Q3	–	Sell	-3,901	Closed	-$380K	–	619
2021 Q2	$380K	Buy	+3,901	New	+$348K	0.35%	101
2019 Q2	–	Sell	-9,377	Closed	-$595K	–	624
2019 Q1	$595K	Buy	+9,377	New	+$493K	0.34%	68
2018 Q4	–	Sell	-4,730	Closed	-$203K	–	723
2018 Q3	$203K	Buy	+4,730	New	+$165K	0.09%	475

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

Fox Run Management's TNDM Position: Q2 2026 in Review

Fox Run Management opened a new position in Tandem Diabetes Care (TNDM) in Q2 2026: 40,462 shares worth $611K. The stake represents 0.1% of the portfolio and ranks #394 among its holdings. This is a return to the name: Fox Run Management previously reported a position in TNDM as recently as Q4 2025.

Fox Run Management first reported a position in TNDM in Q3 2018 and has held it in 8 quarters since. 273 funds tracked by Wall St. Rank hold TNDM as of Q2 2026.

Fox Run Management held 40,462 shares of Tandem Diabetes Care worth $611K as of Q2 2026.
Tandem Diabetes Care was a new Fox Run Management position in Q2 2026.
Tandem Diabetes Care made up 0.1% of Fox Run Management's portfolio in Q2 2026, its #394 holding.
Fox Run Management first reported a position in Tandem Diabetes Care in Q3 2018 and has held it in 8 quarters since.
273 funds tracked by Wall St. Rank held Tandem Diabetes Care as of Q2 2026.

Based on Fox Run Management's 13F filing for Q2 2026, filed 4 Aug 2026.