Security record · archived quarter
TNDM
Tandem Diabetes Care, Inc. · Healthcare · Medical - Devices
17Tracked holders
+2Δ holders
28.59MShares held
$532.96MReported value
+3New positions
−1Exits
Momentum inputs (comparable managers):
holder breadth +13.3% ·
share flow +10.0% ·
net new positions +11.8%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 96 | -2 | 42.96M | $645.44M | +8 | −10 |
| Q1 2026 | 101 | +1 | 46.93M | $900.01M | +9 | −9 |
| Q4 2025 | 101 | +3 | 51.29M | $1.10B | +5 | −1 |
| Q3 2025 | 16 | -4 | 31.69M | $384.56M | — | −4 |
| Q2 2025 | 17 | +2 | 28.59M | $532.96M | +3 | −1 |
| Q1 2025 | 12 | -2 | 7.22M | $138.30M | — | −2 |
| Q4 2024 | 14 | -1 | 8.91M | $320.82M | — | −1 |
| Q3 2024 | 14 | +1 | 9.24M | $392.07M | +1 | — |
| Q2 2024 | 13 | — | 10.47M | $421.99M | — | — |
Who holds it · Q2 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 10.87M | — | $202.65M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 10.87M | — | $202.65M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 10.87M | — | $202.65M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 10.87M | — | $202.65M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 10.87M | — | $202.65M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 10.87M | — | $202.65M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 10.87M | — | $202.65M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 10.87M | — | $202.65M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 10.87M | — | $202.65M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 10.87M | — | $202.65M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 10.87M | — | $202.65M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 10.87M | — | $202.65M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 10.87M | — | $202.65M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 10.87M | — | $202.65M | 0.0% | n/c | 1 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 10.87M | — | $202.65M | 0.0% | n/c | 1 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 10.87M | — | $202.65M | 0.0% | n/c | 1 | SEC ↗ |
| 17 | The Vanguard Group ✦ (passive) | 7.37M | — | $137.37M | 0.0% | n/c | 1 | SEC ↗ |
| 18 | The Vanguard Group ✦ (passive) | 7.37M | — | $137.37M | 0.0% | n/c | 1 | SEC ↗ |
| 19 | The Vanguard Group ✦ (passive) | 7.37M | — | $137.37M | 0.0% | n/c | 1 | SEC ↗ |
| 20 | The Vanguard Group ✦ (passive) | 7.37M | — | $137.37M | 0.0% | n/c | 1 | SEC ↗ |
| 21 | The Vanguard Group ✦ (passive) | 7.37M | — | $137.37M | 0.0% | n/c | 1 | SEC ↗ |
| 22 | State Street Global Advisors ✦ (passive) | 2.65M | -1.6% | $49.32M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 23 | Geode Capital Management ✦ (passive) | 1.61M | +3.1% | $29.95M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 24 | Geode Capital Management ✦ (passive) | 1.61M | +3.1% | $29.95M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 25 | Two Sigma Investments ✦ | 1.23M | +92.2% | $22.98M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 26 | Baillie Gifford ✦ | 1.13M | +53.7% | $20.98M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 27 | Baillie Gifford ✦ | 1.13M | +53.7% | $20.98M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 28 | Baillie Gifford ✦ | 1.13M | +53.7% | $20.98M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 29 | Baillie Gifford ✦ | 1.13M | +53.7% | $20.98M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 30 | Millennium Management ✦ | 969.07K | +325.8% | $18.06M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 31 | Capital World Investors ✦ | 767.00K | 0.0% | $14.30M | 0.0% | Held | 5 | SEC ↗ |
| 32 | Fidelity (FMR) ✦ | 524.67K | — | $9.78M | 0.0% | n/c | 1 | SEC ↗ |
| 33 | Fidelity (FMR) ✦ | 524.67K | — | $9.78M | 0.0% | n/c | 1 | SEC ↗ |
| 34 | Fidelity (FMR) ✦ | 524.67K | — | $9.78M | 0.0% | n/c | 1 | SEC ↗ |
| 35 | Fidelity (FMR) ✦ | 524.67K | — | $9.78M | 0.0% | n/c | 1 | SEC ↗ |
| 36 | Fidelity (FMR) ✦ | 524.67K | — | $9.78M | 0.0% | n/c | 1 | SEC ↗ |
| 37 | Citadel Advisors ✦ | 352.96K | +209.5% | $6.58M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 38 | Citadel Advisors ✦ | 352.96K | +209.5% | $6.58M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 39 | Renaissance Technologies ✦ | 342.33K | +19.6% | $6.38M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 40 | D. E. Shaw & Co. ✦ | 338.67K | New | $6.31M | 0.0% | New | 1 | SEC ↗ |
| 41 | Adage Capital Partners ✦ | 250.00K | New | $4.66M | 0.0% | New | 1 | SEC ↗ |
| 42 | Gotham Asset Management ✦ | 82.43K | +20.1% | $1.54M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 43 | T. Rowe Price ✦ | 59.20K | +12.0% | $1.10M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 44 | AQR Capital Management ✦ | 41.00K | +239.8% | $764,315 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 45 | AQR Capital Management ✦ | 41.00K | +239.8% | $764,315 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 46 | AQR Capital Management ✦ | 41.00K | +239.8% | $764,315 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 47 | AQR Capital Management ✦ | 41.00K | +239.8% | $764,315 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 48 | Arrowstreet Capital ✦ | 12.41K | New | $231,341 | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| D. E. Shaw & Co. | $6.31M | 0.0% |
| Adage Capital Partners | $4.66M | 0.0% |
| Arrowstreet Capital | $231,341 | 0.0% |
Exited
| Marshall Wace | $1.35M | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1 holders, 51.40K shares, $985 reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Aug 06
SC 13G/A — Voya Financial, Inc.
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q2 2025 ·
Methodology ·
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