Skip to content
Disclosery

TNDM TANDEM DIABETES CARE INC

Follow

COM NEW (common), issuer CIK 1438133

267 managers (275 13F filers) reported a position in TNDM shares at 2026-03-31, 78,680,659 shares in all. 40 filers opened a position and 35 filers sold out during the quarter.

Managers
267
13F filers
275
New
40
Added
96
Reduced
93
Sold out
35
Shares held by filers
78,680,659

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
AdvisorNet Financial, Inc1,680$32.2K<0.01%013F-HRTimeline
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…1,634$31.3K<0.01%+94813F-HRTimelineGroup
FIRST HORIZON CORP1,618$31K<0.01%-613F-HRTimeline
McIlrath & Eck, LLC1,605$30.8K<0.01%013F-HRTimeline
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …1,348$25.8K<0.01%+36913F-HRTimelineGroup
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…1,322$25.3K<0.01%+27113F-HR/ATimelineGroup
CoreCap Advisors, LLC1,283$24.6K<0.01%-4,62613F-HRTimeline
Ancora Advisors LLCin group Ancora Advisors LLC1,230$23.6K<0.01%+87013F-HRTimelineGroup
SALEM INVESTMENT COUNSELORS INC1,000$19.2K<0.01%new13F-HR/ATimeline
WELLINGTON-ALTUS USA INC.1,151$17.4K0.01%+34313F-HRTimeline
Larson Financial Group LLC804$15.4K<0.01%+51213F-HRTimeline
Salomon & Ludwin, LLC776$14.4K<0.01%+18113F-HRTimeline
Arax Advisory Partners748$14.3K<0.01%+25013F-HRTimeline
HANTZ FINANCIAL SERVICES, INC.721$14K<0.01%-1413F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Allworth Financial LP645$12.4K<0.01%+10313F-HRTimeline
Kemnay Advisory Services Inc.538$10.3K<0.01%new13F-HRTimeline
QUADRANT CAPITAL GROUP LLC480$9.2K<0.01%-8813F-HR/ATimeline
SIGNATUREFD, LLC477$9.14K<0.01%+13013F-HRTimeline
Smartleaf Asset Management LLC440$8.62K<0.01%-89013F-HRTimeline
UMB Bank, n.a.444$8.51K<0.01%+6713F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Sterling Capital Management LLC439$8.42K<0.01%-513F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…433$8.3K<0.01%-19413F-HRTimelineGroup
Transamerica Financial Advisors, LLCin group Transamerica Financial Adviso…389$7.46K<0.01%013F-HRTimelineGroup
Covestor Ltd385$7K<0.01%-31113F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC348$6.67K<0.01%013F-HRTimeline
SJS Investment Consulting Inc.321$6.15K<0.01%+31013F-HRTimeline
Quent Capital, LLC309$5.92K<0.01%-14813F-HRTimeline
Parallel Advisors, LLC265$5.08K<0.01%+20013F-HR/ATimeline
BEACON INVESTMENT ADVISORY SERVICES, IN…240$4.6K<0.01%new13F-HRTimeline
NewEdge Advisors, LLC227$4.35K<0.01%+12713F-HR/ATimeline
True Wealth Design, LLC207$3.97K<0.01%+14013F-HRTimeline
HARBOUR INVESTMENTS, INC.204$3.91K<0.01%013F-HRTimeline
TWIN PEAKS WEALTH ADVISORS, LLC142$2.72K<0.01%new13F-HRTimeline
ROTHSCHILD INVESTMENT LLC133$2.55K<0.01%+1013F-HRTimeline
Colonial Trust Co / SCin group Colonial Trust Advisors122$2.39K<0.01%-613F-HRTimelineGroup
NFSG Corp120$2.3K<0.01%013F-HRTimeline
MAI Capital Management113$2.17K<0.01%-2813F-HRTimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC90$2K<0.01%013F-HRTimelineGroup
TOTH FINANCIAL ADVISORY CORP100$1.92K<0.01%013F-HRTimeline
Front Row Advisors LLC100$1.92K<0.01%013F-HRTimeline
Fortitude Family Office, LLC97$1.86K<0.01%013F-HRTimeline
Keating Financial Advisory Services, In…77$1.48K<0.01%new13F-HRTimeline
IFP Advisors, Inc69$1.32K<0.01%013F-HRTimeline
JPL Wealth Management, LLC61$1.17K<0.01%new13F-HR/ATimeline
TD PRIVATE CLIENT WEALTH LLC60$1.15K<0.01%013F-HRTimeline
Parkside Financial Bank & Trust56$1.07K<0.01%013F-HRTimeline
FARMERS & MERCHANTS INVESTMENTS INCin group FARMERS & MERCHANTS INVESTMEN…50$959<0.01%013F-HRTimelineGroup
Bare Financial Services, Inc42$805<0.01%-2213F-HRTimeline
Golden State Wealth Management, LLC41$786<0.01%-3913F-HRTimeline
Cornerstone Planning Group LLC40$777<0.01%013F-HRTimeline
Ascentis Independent Advisorsin group Ascentis Wealth Management, L…40$766<0.01%new13F-HRTimelineGroup
Bell Investment Advisors, Inc36$691<0.01%013F-HRTimeline
EASTERN BANK32$613<0.01%013F-HRTimeline
SBI Securities Co., Ltd.28$537<0.01%+813F-HRTimeline
Elequin Capital, LP24$460<0.01%-6613F-HRTimeline
JFS WEALTH ADVISORS, LLC15$288<0.01%013F-HRTimeline
INTERNATIONAL ASSETS INVESTMENT MANAGEM…15$282<0.01%013F-HRTimeline
ELEVATION WEALTH PARTNERS, LLC14$269<0.01%new13F-HRTimeline
Root Financial Partners, LLC14$268<0.01%new13F-HRTimeline
Accordant Advisory Group Inc12$231<0.01%new13F-HRTimeline
GILPIN WEALTH MANAGEMENT, LLC12$231<0.01%+713F-HRTimeline
Cedar Mountain Advisors, LLC12$230<0.01%-813F-HRTimeline
Ankerstar Wealth, LLC11$211<0.01%013F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.8$153<0.01%new13F-HR/ATimelineGroup
Abound Wealth Management5$96<0.01%-113F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK1$19<0.01%013F-HRTimelineGroup
Activest Wealth Management0$00%new13F-HRTimelineValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.