Security record · archived quarter
TNDM
Tandem Diabetes Care, Inc. · Healthcare · Medical - Devices
101Tracked holders
+1Δ holders
46.93MShares held
$900.01MReported value
+9New positions
−9Exits
Momentum inputs (comparable managers):
holder breadth +1.0% ·
share flow 0.0% ·
net new positions 0.0%
· formula
Ownership fragmentation: more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 1 | -1 | 34.13K | $534,998 | n/a | −2 |
| Q2 2026 | 94 | -3 | 42.93M | $644.94M | +8 | −12 |
| 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 | n/a | −4 |
| Q2 2025 | 17 | +2 | 28.59M | $532.96M | +3 | −1 |
| Q1 2025 | 12 | -2 | 7.22M | $138.30M | n/a | −2 |
| Q4 2024 | 14 | -1 | 8.91M | $320.82M | n/a | −1 |
| Q3 2024 | 14 | +1 | 9.24M | $392.07M | +1 | n/a |
| Q2 2024 | 13 | n/a | 10.47M | $421.99M | n/a | n/a |
Who holds it · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 10.69M | -4.1% | $204.94M | 0.0% | ▼ Trim | 4 | SEC ↗ ×15 |
| 2 | Vanguard Capital Management Llc | 3.04M | n/a | $58.26M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | State Street Global Advisors ✦ (passive) | 2.66M | +0.8% | $51.04M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 4 | Goldman Sachs Group ✦ | 2.22M | +31.8% | $42.54M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 5 | Citadel Advisors ✦ | 2.19M | +5.0% | $42.03M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 6 | UBS Group AG | 2.05M | +390.1% | $39.26M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 7 | Two Sigma Investments ✦ | 1.86M | +55.1% | $35.74M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 8 | Geode Capital Management ✦ (passive) | 1.68M | +1.9% | $32.21M | 0.0% | ▲ Add | 8 | SEC ↗ ×2 |
| 9 | Jennison Associates Llc | 1.66M | -17.9% | $31.79M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 10 | Marshall Wace ✦ | 1.44M | +64.8% | $27.65M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 11 | Morgan Stanley ✦ | 1.36M | -34.8% | $26.02M | 0.0% | ▼ Trim | 3 | SEC ↗ ×7 |
| 12 | Baillie Gifford ✦ | 1.09M | -4.9% | $20.88M | 0.0% | ▼ Trim | 8 | SEC ↗ ×4 |
| 13 | Wellington Management ✦ | 1.04M | +960.7% | $19.99M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 14 | Voya Investment Management Llc | 804.14K | +151.7% | $15.42M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 15 | D. E. Shaw & Co. ✦ | 783.91K | -8.2% | $15.03M | 0.0% | ▼ Trim | 4 | SEC ↗ ×2 |
| 16 | Millennium Management ✦ | 761.67K | +30.5% | $14.60M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 17 | Fidelity (FMR) ✦ | 714.01K | +6.2% | $13.69M | 0.0% | ▲ Add | 4 | SEC ↗ ×5 |
| 18 | Northern Trust Corp | 706.61K | +2.2% | $13.55M | 0.0% | ▲ Add | 2 | SEC ↗ ×6 |
| 19 | Quantinno Capital Management LP | 653.87K | +123.5% | $12.53M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 20 | Charles Schwab Investment… | 642.60K | -0.6% | $12.32M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 21 | Holocene Advisors, LP | 477.36K | +2807.5% | $9.15M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 22 | Aberdeen Group plc | 434.03K | -20.7% | $8.32M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 23 | Barclays Plc | 421.24K | -54.1% | $8.08M | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 24 | Point72 Asset Management ✦ | 420.48K | New | $8.06M | 0.0% | New | 1 | SEC ↗ ×2 |
| 25 | Bank Of America Corp /De/ | 373.22K | -46.9% | $7.15M | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 26 | Nuveen, LLC | 363.80K | -35.4% | $6.97M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 27 | JPMorgan Chase ✦ | 349.79K | +2.4% | $6.85M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 28 | First Trust Advisors Lp | 342.71K | New | $6.57M | 0.0% | New | 1 | SEC ↗ |
| 29 | Bank of New York Mellon Corp | 336.29K | -3.9% | $6.45M | 0.0% | ▼ Trim | 2 | SEC ↗ ×6 |
| 30 | AQR Capital Management ✦ | 331.92K | -2.3% | $6.36M | 0.0% | ▼ Trim | 8 | SEC ↗ ×7 |
| 31 | Principal Financial Group Inc | 331.54K | +2.2% | $6.36M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 32 | Invesco Ltd. | 294.05K | +5.9% | $5.64M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 33 | Envestnet Asset Management Inc | 243.25K | +9.7% | $4.66M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 34 | Bnp Paribas Financial Markets | 208.71K | -83.3% | $4.00M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 35 | Royal Bank Of Canada | 206.03K | -1.2% | $3.95M | 0.0% | ▼ Trim | 2 | SEC ↗ ×5 |
| 36 | Arrowstreet Capital ✦ | 193.56K | +42.6% | $3.71M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 37 | Rhumbline Advisers | 186.32K | +1.1% | $3.57M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 38 | Assenagon Asset Management S.A. | 178.64K | -85.5% | $3.42M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 39 | UBS AM, a distinct business unit of… | 168.49K | +2.2% | $3.23M | 0.0% | ▲ Add | 2 | SEC ↗ ×8 |
| 40 | Legal & General Group Plc | 155.29K | -9.6% | $2.98M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 41 | Toronto Dominion Bank | 150.08K | New | $2.88M | 0.0% | New | 1 | SEC ↗ ×2 |
| 42 | Hrt Financial Lp | 135.10K | -27.2% | $2.59M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 43 | Russell Investments Group, Ltd. | 133.60K | +3.8% | $2.56M | 0.0% | ▲ Add | 2 | SEC ↗ ×9 |
| 44 | Swiss National Bank | 133.30K | 0.0% | $2.56M | 0.0% | Held | 2 | SEC ↗ |
| 45 | Raymond James Financial Inc | 125.34K | +4.3% | $2.40M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 46 | Federated Hermes, Inc. | 123.82K | +495176.0% | $2.37M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 47 | Ameriprise Financial Inc | 121.15K | -5.9% | $2.32M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 48 | Canada Pension Plan Investment Board | 118.44K | -33.3% | $2.27M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 49 | Sei Investments Co | 95.31K | -10.6% | $1.83M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 50 | Zurcher Kantonalbank (Zurich… | 94.34K | +27.5% | $1.81M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 51 | Universal- Beteiligungs- und… | 87.36K | -1.9% | $1.67M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 52 | California State Teachers… | 84.25K | +30.8% | $1.62M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 53 | Alliancebernstein L.P. | 73.15K | -68.8% | $1.61M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 54 | Susquehanna International Group, Llp | 80.75K | -38.0% | $1.55M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 55 | Tudor Investment Corp Et Al | 79.00K | -26.9% | $1.51M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 56 | Cerity Partners LLC | 76.23K | -0.7% | $1.46M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 57 | Prudential Financial Inc | 69.40K | +6.8% | $1.33M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 58 | T. Rowe Price ✦ | 68.66K | +20.9% | $1.32M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 59 | Citigroup Inc | 68.35K | +272.1% | $1.31M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 60 | Jones Financial Companies Lllp | 58.39K | +3638.0% | $1.23M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 61 | Deutsche Bank Ag\ | 60.63K | +11.8% | $1.16M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 62 | Renaissance Technologies ✦ | 58.23K | New | $1.12M | 0.0% | New | 1 | SEC ↗ |
| 63 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 55.19K | -10.2% | $1.06M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 64 | Qube Research & Technologies Ltd | 51.96K | New | $996,092 | 0.0% | New | 1 | SEC ↗ |
| 65 | State Of Wisconsin Investment Board | 42.58K | -1.2% | $816,220 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 66 | Bank Of Montreal /Can/ | 37.44K | +102.1% | $717,629 | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 67 | American Century Companies Inc | 33.47K | +2.2% | $641,620 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 68 | Corient Private Wealth LP | 33.74K | -4.4% | $636,658 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 69 | Mariner, LLC | 33.01K | -7.1% | $632,791 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 70 | Wells Fargo & Company/Mn | 31.53K | -62.6% | $604,426 | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 71 | Truist Financial Corp | 30.62K | +8.7% | $586,966 | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 72 | Janus Henderson Group Plc | 29.81K | 0.0% | $571,328 | 0.0% | Held | 2 | SEC ↗ |
| 73 | LPL Financial LLC | 29.48K | -25.5% | $565,189 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 74 | Manufacturers Life Insurance… | 28.72K | -3.4% | $550,601 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 75 | Stifel Financial Corp | 26.94K | -2.0% | $516,521 | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 76 | Cwm, Llc | 24.77K | +1.3% | $474,860 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 77 | Fifth Third Bancorp | 22.61K | +2075.7% | $433,341 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 78 | Wealth Enhancement Advisory… | 22.12K | +18.3% | $411,646 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 79 | Pnc Financial Services Group, Inc. | 20.82K | -6.8% | $399,063 | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 80 | Mercer Global Advisors Inc /Adv | 20.21K | +79.0% | $387,464 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 81 | New York State Common Retirement… | 19.95K | -98.5% | $382,403 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 82 | State Board Of Administration Of… | 18.55K | 0.0% | $355,642 | 0.0% | Held | 2 | SEC ↗ |
| 83 | Franklin Resources Inc | 17.87K | -36.0% | $342,549 | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 84 | Focus Partners Wealth | 17.53K | +83.7% | $336,529 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 85 | Allianz Asset Management GmbH | 16.90K | New | $323,973 | 0.0% | New | 1 | SEC ↗ |
| 86 | Neuberger Berman Group LLC | 16.07K | +0.6% | $308,043 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 87 | Captrust Financial Advisors | 15.04K | +14.7% | $288,344 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 88 | Amundi | 12.62K | -57.2% | $241,830 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 89 | Victory Capital Management Inc | 10.88K | +11.4% | $208,627 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 90 | Pictet Asset Management Holding SA | 10.76K | New | $206,346 | 0.0% | New | 1 | SEC ↗ |
| 91 | ProShare Advisors LLC | 10.55K | -19.9% | $202,321 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 92 | Ensign Peak Advisors, Inc | 5.03K | 0.0% | $96,463 | 0.0% | Held | 2 | SEC ↗ |
| 93 | Simplex Trading, Llc | 2.90K | New | $55,650 | 0.0% | New | 1 | SEC ↗ |
| 94 | Osaic Holdings, Inc. | 2.59K | -1.1% | $49,607 | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 95 | Us Bancorp \De\ | 2.21K | +9.4% | $42,346 | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 96 | Group One Trading Llc | 1.81K | -97.0% | $34,794 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 97 | Assetmark, Inc | 1.75K | 0.0% | $33,548 | 0.0% | Held | 2 | SEC ↗ |
| 98 | Northwestern Mutual Wealth… | 1.63K | +138.2% | $31,324 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 99 | BNP Paribas Asset Management… | 1.35K | +37.7% | $25,841 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 100 | Rockefeller Capital Management L.P. | 433 | -30.9% | $8,300 | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Point72 Asset Management | $8.06M | 0.0% |
| First Trust Advisors Lp | $6.57M | 0.0% |
| Toronto Dominion Bank | $2.88M | 0.0% |
| Renaissance Technologies | $1.12M | 0.0% |
| Qube Research & Technologies… | $996,092 | 0.0% |
| Allianz Asset Management GmbH | $323,973 | 0.0% |
| Pictet Asset Management… | $206,346 | 0.0% |
| Simplex Trading, Llc | $55,650 | 0.0% |
Exited
| Balyasny Asset Management L.P. | $5.78M | was 0.0% |
| Jane Street Group, Llc | $4.62M | was 0.0% |
| Adage Capital Partners | $4.02M | was 0.0% |
| Hsbc Holdings Plc | $1.62M | was 0.0% |
| Norges Bank | $1.19M | was 0.0% |
| Man Group plc | $280,948 | was 0.0% |
| Cetera Investment Advisers | $240,389 | was 0.0% |
| Creative Planning | $208,326 | was 0.0% |
| Walleye Trading LLC | $205,689 | 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: Q1 2026 ·
Methodology ·
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