Bank of America
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Bank of America’s Tandem Diabetes Care TNDM Stock Holding History

Bank of America’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
2016
Q2 		– Sell
-2,080
Closed -$181K – 7375
2016
Q1 		$181K Buy
+2,080
New +$182K ﹤0.01% 5182

Other funds holding TNDM

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
SC
Sessa Capital New York $5.51B 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 $12.8B AUM 48.82% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 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 $871B AUM 31.28% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

Bank of America's TNDM Position: Q1 2026 in Review

Bank of America reduced its Tandem Diabetes Care (TNDM) stake by 47% in Q1 2026, selling an estimated $7.15M and leaving 373,224 shares worth $7.15M. The position accounts for ﹤0.01% of the portfolio, ranked #3200.

Bank of America first reported a position in TNDM in Q4 2013 and has held it in 50 quarters since. The position peaked at $25.5M in Q2 2024. 272 funds tracked by Wall St. Rank hold TNDM as of Q1 2026.

  • Bank of America held 373,224 shares of Tandem Diabetes Care worth $7.15M as of Q1 2026.
  • Bank of America sold 329,279 Tandem Diabetes Care shares in Q1 2026, an estimated $7.15M.
  • Tandem Diabetes Care made up ﹤0.01% of Bank of America's portfolio in Q1 2026, its #3200 holding.
  • Bank of America first reported a position in Tandem Diabetes Care in Q4 2013 and has held it in 50 quarters since.
  • Bank of America's Tandem Diabetes Care position peaked at $25.5M in Q2 2024.
  • 272 funds tracked by Wall St. Rank held Tandem Diabetes Care as of Q1 2026.

Based on Bank of America's 13F filing for Q1 2026, filed 18 May 2026.