Mariner
TNDM icon

Mariner’s Tandem Diabetes Care TNDM Stock Holding History

Mariner’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
Q1 		$633K Sell
33,008
-2,521
-7% -$54.8K ﹤0.01% 2308
2025
Q4 		$781K Buy
35,529
+10,726
+43% +$194K ﹤0.01% 2127
2025
Q3 		$301K Buy
24,803
+7,062
+40% +$95.6K ﹤0.01% 2805
2025
Q2 		$331K Sell
17,741
-4,404
-20% -$87.2K ﹤0.01% 2644
2025
Q1 		$424K Buy
22,145
+5,264
+31% +$154K ﹤0.01% 2337
2024
Q4 		$608K Sell
16,881
-324
-2% -$11K ﹤0.01% 2024
2024
Q3 		$730K Buy
17,205
+235
+1% +$9.96K ﹤0.01% 1844
2024
Q2 		$684K Buy
16,970
+428
+3% +$17.9K ﹤0.01% 1790
2024
Q1 		$586K Buy
16,542
+82
+0.5% +$2.2K ﹤0.01% 1910
2023
Q4 		$487K Buy
+16,460
New +$341K ﹤0.01% 1945

Other funds holding TNDM

BlackRock
BlackRock New York $5.7T AUM 30.48% 1-Year Est. Return
SC
Sessa Capital New York $5.26B AUM 47.23% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
ACH
ArrowMark Colorado Holdings Denver, Colorado $3.76B AUM 21.77% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
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
DCM
Driehaus Capital Management Chicago, Illinois $13.6B AUM 173.98% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $761B AUM 31.28% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $141B AUM 30.34% 1-Year Est. Return