Brown Advisory
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Brown Advisory’s Tandem Diabetes Care TNDM Stock Holding History

Brown Advisory’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
Q3 		– Sell
-1,057,115
Closed -$19.7M – 1418
2025
Q2 		$19.7M Buy
1,057,115
+131,805
+14% +$2.61M 0.03% 312
2025
Q1 		$17.7M Buy
925,310
+12,223
+1% +$358K 0.03% 323
2024
Q4 		$32.9M Buy
+913,087
New +$30.9M 0.04% 268
2019
Q2 		– Sell
-8,570
Closed -$544K – 1253
2019
Q1 		$544K Buy
8,570
+433
+5% +$22.7K ﹤0.01% 965
2018
Q4 		$309K Buy
8,137
+1,266
+18% +$44.7K ﹤0.01% 1064
2018
Q3 		$294K Buy
+6,871
New +$240K ﹤0.01% 1145
2015
Q4 		– Sell
-1,232
Closed -$108K – 989
2015
Q3 		$108K Buy
1,232
+34
+3% +$3.96K ﹤0.01% 910
2015
Q2 		$130K Hold
1,198
– – ﹤0.01% 836
2015
Q1 		$151K Hold
1,198
– – ﹤0.01% 894
2014
Q4 		$152K Hold
1,198
– – ﹤0.01% 891
2014
Q3 		$161K Buy
+1,198
New +$168K ﹤0.01% 900

Other funds holding TNDM

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
SC
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
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
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Brown Advisory's TNDM Position: Q3 2025 in Review

Brown Advisory sold out of Tandem Diabetes Care (TNDM) in Q3 2025, closing a stake of 1,057,115 shares — an estimated $19.7M sold.

Brown Advisory first reported a position in TNDM in Q3 2014 and held it in 11 quarters. The position peaked at $32.9M in Q4 2024. 255 funds tracked by Wall St. Rank hold TNDM as of Q3 2025.

  • Brown Advisory reported no remaining Tandem Diabetes Care position as of Q3 2025 after selling out during the quarter.
  • Brown Advisory sold 1,057,115 Tandem Diabetes Care shares in Q3 2025, an estimated $19.7M.
  • Brown Advisory first reported a position in Tandem Diabetes Care in Q3 2014 and held it in 11 quarters.
  • Brown Advisory's Tandem Diabetes Care position peaked at $32.9M in Q4 2024.
  • 255 funds tracked by Wall St. Rank held Tandem Diabetes Care as of Q3 2025.

Based on Brown Advisory's 13F filing for Q3 2025, filed 14 Nov 2025.