Security record · archived quarter
TNDM
Tandem Diabetes Care, Inc. · Healthcare · Medical - Devices
96Tracked holders
-2Δ holders
42.96MShares held
$645.44MReported value
+8New positions
−10Exits
Momentum inputs (comparable managers):
holder breadth -2.0% ·
share flow -8.2% ·
net new positions -2.1%
— formula
Broad distribution — falling shares and fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2026
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 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 11.58M | +8.3% | $174.79M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 11.58M | +8.3% | $174.79M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 11.58M | +8.3% | $174.79M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 11.58M | +8.3% | $174.79M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 11.58M | +8.3% | $174.79M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 11.58M | +8.3% | $174.79M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 11.58M | +8.3% | $174.79M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 11.58M | +8.3% | $174.79M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 11.58M | +8.3% | $174.79M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 11.58M | +8.3% | $174.79M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 11.58M | +8.3% | $174.79M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 11.58M | +8.3% | $174.79M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 11.58M | +8.3% | $174.79M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 11.58M | +8.3% | $174.79M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 15 | Vanguard Capital Management Llc | 3.10M | +1.9% | $46.73M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 16 | State Street Global Advisors ✦ (passive) | 2.85M | +7.1% | $43.03M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 17 | Jennison Associates Llc | 2.33M | +40.6% | $35.18M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 18 | Geode Capital Management ✦ (passive) | 1.80M | +7.2% | $27.18M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 19 | Geode Capital Management ✦ (passive) | 1.80M | +7.2% | $27.18M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 20 | Citadel Advisors ✦ | 1.74M | -20.8% | $26.19M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 21 | Citadel Advisors ✦ | 1.74M | -20.8% | $26.19M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 22 | Millennium Management ✦ | 1.31M | +72.2% | $19.79M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 23 | UBS Group AG | 1.15M | -44.0% | $17.30M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 24 | UBS Group AG | 1.15M | -44.0% | $17.30M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 25 | UBS Group AG | 1.15M | -44.0% | $17.30M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 26 | UBS Group AG | 1.15M | -44.0% | $17.30M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 27 | Fidelity (FMR) ✦ | 976.43K | +36.8% | $14.73M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 28 | Fidelity (FMR) ✦ | 976.43K | +36.8% | $14.73M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 29 | Fidelity (FMR) ✦ | 976.43K | +36.8% | $14.73M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 30 | Fidelity (FMR) ✦ | 976.43K | +36.8% | $14.73M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 31 | Fidelity (FMR) ✦ | 976.43K | +36.8% | $14.73M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 32 | Fidelity (FMR) ✦ | 976.43K | +36.8% | $14.73M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 33 | Wellington Management ✦ | 871.81K | -16.4% | $13.16M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 34 | Wellington Management ✦ | 871.81K | -16.4% | $13.16M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 35 | Wellington Management ✦ | 871.81K | -16.4% | $13.16M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 36 | Wellington Management ✦ | 871.81K | -16.4% | $13.16M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 37 | Goldman Sachs Group ✦ | 862.30K | -61.1% | $13.01M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 38 | Goldman Sachs Group ✦ | 862.30K | -61.1% | $13.01M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 39 | Goldman Sachs Group ✦ | 862.30K | -61.1% | $13.01M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 40 | Northern Trust Corp | 753.69K | +6.7% | $11.37M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 41 | Northern Trust Corp | 753.69K | +6.7% | $11.37M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 42 | Northern Trust Corp | 753.69K | +6.7% | $11.37M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 43 | Northern Trust Corp | 753.69K | +6.7% | $11.37M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 44 | Northern Trust Corp | 753.69K | +6.7% | $11.37M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 45 | Northern Trust Corp | 753.69K | +6.7% | $11.37M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 46 | Qube Research & Technologies Ltd | 683.82K | +1216.0% | $10.32M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 47 | D. E. Shaw & Co. ✦ | 681.81K | -13.0% | $10.29M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 48 | D. E. Shaw & Co. ✦ | 681.81K | -13.0% | $10.29M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 49 | Arrowstreet Capital ✦ | 667.69K | +245.0% | $10.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 50 | Charles Schwab Investment… | 656.84K | +2.2% | $9.91M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 51 | Morgan Stanley ✦ | 647.07K | -52.3% | $9.76M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 52 | Morgan Stanley ✦ | 647.07K | -52.3% | $9.76M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 53 | Morgan Stanley ✦ | 647.07K | -52.3% | $9.76M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 54 | Morgan Stanley ✦ | 647.07K | -52.3% | $9.76M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 55 | Morgan Stanley ✦ | 647.07K | -52.3% | $9.76M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 56 | Morgan Stanley ✦ | 647.07K | -52.3% | $9.76M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 57 | Morgan Stanley ✦ | 647.07K | -52.3% | $9.76M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 58 | Point72 Asset Management ✦ | 610.90K | +45.3% | $9.22M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 59 | Bank Of Montreal /Can/ | 564.97K | +1409.2% | $8.53M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 60 | Bank Of Montreal /Can/ | 564.97K | +1409.2% | $8.53M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 61 | Bank Of Montreal /Can/ | 564.97K | +1409.2% | $8.53M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 62 | Bank Of Montreal /Can/ | 564.97K | +1409.2% | $8.53M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 63 | Bank Of Montreal /Can/ | 564.97K | +1409.2% | $8.53M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 64 | Two Sigma Investments ✦ | 558.41K | -70.0% | $8.43M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 65 | AQR Capital Management ✦ | 533.84K | +60.8% | $8.06M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 66 | AQR Capital Management ✦ | 533.84K | +60.8% | $8.06M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 67 | AQR Capital Management ✦ | 533.84K | +60.8% | $8.06M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 68 | AQR Capital Management ✦ | 533.84K | +60.8% | $8.06M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 69 | AQR Capital Management ✦ | 533.84K | +60.8% | $8.06M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 70 | AQR Capital Management ✦ | 533.84K | +60.8% | $8.06M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 71 | AQR Capital Management ✦ | 533.84K | +60.8% | $8.06M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 72 | Aberdeen Group plc | 441.74K | +1.8% | $6.67M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 73 | Bank Of America Corp /De/ | 395.05K | +5.8% | $5.96M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 74 | Bank Of America Corp /De/ | 395.05K | +5.8% | $5.96M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 75 | Bank Of America Corp /De/ | 395.05K | +5.8% | $5.96M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 76 | Bank Of America Corp /De/ | 395.05K | +5.8% | $5.96M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 77 | Bank Of America Corp /De/ | 395.05K | +5.8% | $5.96M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 78 | Bank of New York Mellon Corp | 602.16K | +79.1% | $5.55M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 79 | Bank of New York Mellon Corp | 602.16K | +79.1% | $5.55M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 80 | Bank of New York Mellon Corp | 602.16K | +79.1% | $5.55M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 81 | Bank of New York Mellon Corp | 602.16K | +79.1% | $5.55M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 82 | Bank of New York Mellon Corp | 602.16K | +79.1% | $5.55M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 83 | Bank of New York Mellon Corp | 602.16K | +79.1% | $5.55M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 84 | Bank of New York Mellon Corp | 602.16K | +79.1% | $5.55M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 85 | JPMorgan Chase ✦ | 349.65K | 0.0% | $5.53M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 86 | JPMorgan Chase ✦ | 349.65K | 0.0% | $5.53M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 87 | JPMorgan Chase ✦ | 349.65K | 0.0% | $5.53M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 88 | Tudor Investment Corp Et Al | 362.71K | +359.1% | $5.47M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 89 | Barclays Plc | 350.43K | -16.8% | $5.29M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 90 | Barclays Plc | 350.43K | -16.8% | $5.29M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 91 | Barclays Plc | 350.43K | -16.8% | $5.29M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 92 | Principal Financial Group Inc | 335.09K | +1.1% | $5.06M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 93 | Principal Financial Group Inc | 335.09K | +1.1% | $5.06M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 94 | Invesco Ltd. | 321.13K | +9.2% | $4.85M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 95 | Invesco Ltd. | 321.13K | +9.2% | $4.85M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 96 | Invesco Ltd. | 321.13K | +9.2% | $4.85M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 97 | Invesco Ltd. | 321.13K | +9.2% | $4.85M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 98 | Invesco Ltd. | 321.13K | +9.2% | $4.85M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 99 | Quantinno Capital Management LP | 306.66K | -53.1% | $4.63M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 100 | First Trust Advisors Lp | 292.84K | -14.6% | $4.42M | 0.0% | ▼ Trim | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| Marshall Wace | $27.65M | was 0.0% |
| Baillie Gifford | $20.88M | was 0.0% |
| Toronto Dominion Bank | $2.88M | was 0.0% |
| Canada Pension Plan… | $2.27M | was 0.0% |
| Renaissance Technologies | $1.12M | was 0.0% |
| American Century Companies Inc | $641,620 | was 0.0% |
| Focus Partners Wealth | $336,529 | was 0.0% |
| ProShare Advisors LLC | $202,321 | was 0.0% |
| Simplex Trading, Llc | $55,650 | was 0.0% |
| Group One Trading Llc | $34,794 | 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 2026 ·
Methodology ·
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