Tandem Diabetes Care, Inc. TNDM

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16.91 USD -1.08 (-6.00%)

At closeNov 6, 2026, 4:20 PM EST

16.91 0.00 0.00%

After hours · Nov 6, 4:20 PM ET

15.45 Day range 17.30

12.26 52-week range 29.65

Held by insiders 1.17%

Held by institutions 116.52%

Float held by institutions 117.90%

Institutions 374

Top institutional holders
Holder	% held	Shares	Value	Reported
Blackrock Inc.	16.65%	11,583,125	195.87M	Jun 29, 2026
Sessa Capital IM, L.P.	7.33%	5,100,000	86.24M	Jun 29, 2026
Vanguard Portfolio Management LLC	6.18%	4,299,667	72.71M	Jun 29, 2026
First Light Asset Management, LLC	4.86%	3,383,553	57.22M	Jun 29, 2026
Vanguard Capital Management LLC	4.45%	3,096,536	52.36M	Jun 29, 2026
State Street Corporation	4.10%	2,851,646	48.22M	Jun 29, 2026

Top mutual fund holders
Holder	% held	Shares	Value	Reported
iShares Trust-iShares Core S&P Small-Cap ETF	5.95%	4,140,278	70.01M	Sep 29, 2026
VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund	3.14%	2,186,918	36.98M	Jun 29, 2026
iShares Trust-iShares Russell 2000 ETF	2.59%	1,803,947	30.50M	Sep 29, 2026
VANGUARD INDEX FUNDS-Vanguard Small-Cap Index Fund	2.26%	1,570,019	26.55M	Jun 29, 2026
VANGUARD INDEX FUNDS-Vanguard Small-Cap Growth Index Fund	1.30%	901,467	15.24M	Jun 29, 2026
VANGUARD INDEX FUNDS-Vanguard Extended Market Index Fund	1.13%	788,509	13.33M	Jun 29, 2026

TNDM insiders
Insider	Relation	Latest transaction	Date	Shares held
ALLEN DICK P	Retired	Conversion of Exercise of derivative security	May 20, 2026	50,903
BLICKENSTAFF KIM D	Director	Sale	Nov 20, 2024	0
CARPENTER RICK	Chief Technology Officer	Conversion of Exercise of derivative security	Aug 13, 2026	32,148
GASSER ELIZABETH ANNE	Officer	Conversion of Exercise of derivative security	Aug 13, 2026	34,505
HANSEN SHANNON MARIE	Officer	Conversion of Exercise of derivative security	Aug 13, 2026	33,585
MORRISON SUSAN M	Officer	Conversion of Exercise of derivative security	Aug 13, 2026	52,788

Held by funds