TNDM

Tandem Diabetes Care Inc

Latest period2026 - Q1Total superinvestors275

Top 10 Superinvestors by Shares Owned

This chart shows the top 10 superinvestors based on the number of shares they owned in 2025-Q4 and 2026-Q1. According to the most recent SEC 13F filing, 275 superinvestors own shares of Tandem Diabetes Care Inc (TNDM), although recent data may remain incomplete due to pending filings.

Quarter-over-Quarter Change (%)

This chart highlights the quarter-over-quarter change (%) in the number of superinvestors holding Tandem Diabetes Care Inc (TNDM), the total shares they held, and the total reported dollar value. It gives a clear view of whether there is ongoing momentum. The dotted lines at the top and bottom adjust longer bars to keep smaller data points visible for better comparison.

Superinvestors' Activity (%) Over the Last 4 Quarters

This chart shows superinvestors' activity with Tandem Diabetes Care Inc (TNDM) over the last four quarters, highlighting the percentage of investors who added, increased, decreased, held, or exited their positions, revealing shifts in sentiment over time.

Superinvestors' Past Actions

This chart displays superinvestors' past actions with Tandem Diabetes Care Inc (TNDM) over the last 10 years (40 quarters), helping to visualize the collective momentum and investment trends over time.

Superinvestors ownership

SuperinvestorPortfolio %Reported Value
Spencer Fleming@Blackrock, Inc.
Recent Activity
Decreased -4.11%
0.01%
$204.943M
10.691M shares@ 19.18 avg price
Andrew Johnson@Ubs Group Ag
Recent Activity
Increased 128.46%
0.03%
$138.53M
7.226M shares@ 19.17 avg price
Jae Hong@Sessa Capital Im, L.p.
Recent Activity
Decreased -5.38%
1.65%
$90.689M
4.731M shares@ 19.18 avg price
Christine M. Buchanan@Vanguard Portfolio Management Llc
Recent Activity
New Position
0.01%
$76.552M
3.993M shares@ 19.18 avg price
Richard Grove@Arrowmark Colorado Holdings Llc
Recent Activity
Increased 7.41%
1.59%
$59.496M
3.104M shares@ 19.18 avg price
Christine M. Buchanan@Vanguard Capital Management Llc
Recent Activity
New Position
0.01%
$58.256M
3.039M shares@ 19.17 avg price
David Rouse@Gw&k Investment Management, Llc
Recent Activity
Increased 0.53%
0.46%
$51.55M
2.689M shares@ 19.17 avg price
ELIZABETH SCHAEFER@State Street Corp
Recent Activity
Increased 0.78%
0.01%
$51.036M
2.662M shares@ 19.17 avg price
Janet McWilliams@Driehaus Capital Management Llc
Recent Activity
Increased 43.11%
0.33%
$44.176M
2.304M shares@ 19.17 avg price
Seth Levy@Citadel Advisors Llc
Recent Activity
Increased 5.82%
0.01%
$43.653M
2.277M shares@ 19.17 avg price

1-10 of 275