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Summit Securities Group’s Tandem Diabetes Care TNDM Stock Holding History

Summit Securities Group’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 		– Sell
-432
Closed -$9.49K – 1368
2025
Q4 		$9.49K Buy
+432
New +$7.8K ﹤0.01% 896
2025
Q3 		– Sell
-6,160
Closed -$115K – 1361
2025
Q2 		$115K Buy
+6,160
New +$122K 0.02% 344

Other funds holding TNDM

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
SC
Sessa Capital New York $5.98B AUM 99.85% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
ACH
ArrowMark Colorado Holdings Denver, Colorado $2.4B AUM 42.85% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
GKIM
GW&K Investment Management Boston, Massachusetts $12.8B AUM 48.82% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
DCM
Driehaus Capital Management Chicago, Illinois $17.3B AUM 211.34% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return

Summit Securities Group's TNDM Position: Q1 2026 in Review

Summit Securities Group sold out of Tandem Diabetes Care (TNDM) in Q1 2026, closing a stake of 432 shares — an estimated $9.49K sold.

Summit Securities Group first reported a position in TNDM in Q2 2025 and held it in 2 quarters. The position peaked at $115K in Q2 2025. 274 funds tracked by Wall St. Rank hold TNDM as of Q1 2026.

  • Summit Securities Group reported no remaining Tandem Diabetes Care position as of Q1 2026 after selling out during the quarter.
  • Summit Securities Group sold 432 Tandem Diabetes Care shares in Q1 2026, an estimated $9.49K.
  • Summit Securities Group first reported a position in Tandem Diabetes Care in Q2 2025 and held it in 2 quarters.
  • Summit Securities Group's Tandem Diabetes Care position peaked at $115K in Q2 2025.
  • 274 funds tracked by Wall St. Rank held Tandem Diabetes Care as of Q1 2026.

Based on Summit Securities Group's 13F filing for Q1 2026, filed 30 Apr 2026.