Security record · archived quarter
RGEN
Repligen Corporation · Healthcare · Medical - Instruments & Supplies
120Tracked holders
-2Δ holders
41.26MShares held
$4.90BReported value
+8New positions
−11Exits
Momentum inputs (comparable managers):
holder breadth -1.6% ·
share flow +0.3% ·
net new positions -2.5%
· formula
Concentrated accumulation: rising shares among fewer holders
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 | 2 | 0 | 11.91K | $1.59M | n/a | −1 |
| Q2 2026 | 125 | +9 | 40.15M | $5.47B | +16 | −8 |
| Q1 2026 | 120 | -2 | 41.26M | $4.90B | +8 | −11 |
| Q4 2025 | 122 | -3 | 43.70M | $7.16B | +1 | −3 |
| Q3 2025 | 21 | +2 | 26.22M | $3.51B | +3 | −2 |
| Q2 2025 | 17 | +1 | 26.68M | $3.32B | +2 | −1 |
| Q1 2025 | 13 | +1 | 13.27M | $1.69B | +1 | n/a |
| Q4 2024 | 12 | 0 | 12.86M | $1.85B | +1 | −1 |
| Q3 2024 | 11 | -3 | 9.29M | $1.38B | n/a | −3 |
| Q2 2024 | 14 | n/a | 8.37M | $1.05B | n/a | n/a |
Who holds it · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 5.99M | -9.5% | $706.10M | 0.0% | ▼ Trim | 4 | SEC ↗ ×17 |
| 2 | T. Rowe Price ✦ | 4.88M | +6.1% | $574.74M | 0.1% | ▲ Add | 8 | SEC ↗ ×2 |
| 3 | Fidelity (FMR) ✦ | 2.89M | +0.7% | $340.12M | 0.0% | ▲ Add | 4 | SEC ↗ ×6 |
| 4 | Vanguard Capital Management Llc | 2.40M | n/a | $282.36M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | State Street Global Advisors ✦ (passive) | 1.78M | +3.4% | $209.40M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 6 | Bank of New York Mellon Corp | 1.53M | +13.9% | $180.43M | 0.0% | ▲ Add | 2 | SEC ↗ ×22 |
| 7 | Massachusetts Financial Services Co… | 1.40M | +15.0% | $164.65M | 0.1% | ▲ Add | 2 | SEC ↗ ×6 |
| 8 | Invesco Ltd. | 1.28M | +1.7% | $150.60M | 0.0% | ▲ Add | 2 | SEC ↗ ×12 |
| 9 | Franklin Resources Inc | 1.19M | +8.3% | $140.58M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 10 | Alliancebernstein L.P. | 831.79K | -16.4% | $136.30M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 11 | Citadel Advisors ✦ | 1.10M | -21.2% | $129.51M | 0.1% | ▼ Trim | 8 | SEC ↗ |
| 12 | Geode Capital Management ✦ (passive) | 1.06M | +3.4% | $125.44M | 0.0% | ▲ Add | 8 | SEC ↗ ×2 |
| 13 | Ameriprise Financial Inc | 925.21K | +87.2% | $109.01M | 0.0% | ▲ Add | 2 | SEC ↗ ×7 |
| 14 | Dimensional Fund Advisors Lp | 854.74K | +6.3% | $100.68M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 15 | Holocene Advisors, LP | 708.89K | -26.2% | $83.52M | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 16 | Morgan Stanley ✦ | 683.79K | +19.8% | $80.56M | 0.0% | ▲ Add | 3 | SEC ↗ ×15 |
| 17 | UBS Group AG | 670.33K | +92.4% | $78.98M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 18 | Goldman Sachs Group ✦ | 651.35K | +120.6% | $76.74M | 0.0% | ▲ Add | 3 | SEC ↗ ×5 |
| 19 | First Trust Advisors Lp | 630.07K | +122.8% | $74.23M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 20 | Voya Investment Management Llc | 622.92K | +19.5% | $73.39M | 0.1% | ▲ Add | 2 | SEC ↗ ×3 |
| 21 | Point72 Asset Management ✦ | 569.47K | -43.4% | $67.10M | 0.1% | ▼ Trim | 8 | SEC ↗ |
| 22 | Bamco Inc /Ny/ | 548.35K | +0.7% | $64.61M | 0.2% | ▲ Add | 2 | SEC ↗ |
| 23 | Schroder Investment Management Group | 520.11K | n/a | $61.28M | 0.1% | n/c | 1 | SEC ↗ ×2 |
| 24 | Charles Schwab Investment… | 453.04K | +5.2% | $53.38M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 25 | Northern Trust Corp | 444.75K | -0.3% | $52.40M | 0.0% | ▼ Trim | 2 | SEC ↗ ×6 |
| 26 | Bank Of America Corp /De/ | 378.20K | -4.8% | $44.56M | 0.0% | ▼ Trim | 2 | SEC ↗ ×5 |
| 27 | BNP Paribas Asset Management… | 377.01K | +16.4% | $44.42M | 0.1% | ▲ Add | 2 | SEC ↗ ×2 |
| 28 | Allspring Global Investments… | 280.52K | -9.8% | $33.19M | 0.1% | ▼ Trim | 2 | SEC ↗ ×3 |
| 29 | Sei Investments Co | 272.10K | +49.5% | $32.06M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 30 | LMR Partners LLP | 253.06K | New | $29.82M | 0.3% | New | 1 | SEC ↗ |
| 31 | Daiwa Securities Group Inc. | 239.85K | +84.1% | $28.26M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 32 | American Century Companies Inc | 235.37K | -6.0% | $27.73M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 33 | PRIMECAP Management ✦ | 235.07K | +25.9% | $27.70M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 34 | Barclays Plc | 194.02K | +21.9% | $22.86M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 35 | Artisan Partners Limited Partnership | 190.10K | -1.9% | $22.40M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 36 | Nomura Asset Management… | 181.38K | -11.5% | $21.37M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 37 | Bnp Paribas Financial Markets | 177.52K | +139.8% | $20.92M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 38 | New York State Common Retirement… | 176.33K | +3.1% | $20.77M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 39 | Baird Financial Group, Inc. | 171.63K | -16.5% | $20.22M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 40 | Raymond James Financial Inc | 168.86K | 0.0% | $19.41M | 0.0% | ▼ Trim | 2 | SEC ↗ ×5 |
| 41 | UBS AM, a distinct business unit of… | 163.75K | -0.4% | $19.29M | 0.0% | ▼ Trim | 2 | SEC ↗ ×9 |
| 42 | Fifth Third Bancorp | 161.07K | +4170.1% | $18.98M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 43 | Principal Financial Group Inc | 159.75K | -19.4% | $18.82M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 44 | Loomis Sayles & Co L P | 152.59K | +1.9% | $17.98M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 45 | Royal Bank Of Canada | 149.90K | +4.6% | $17.66M | 0.0% | ▲ Add | 2 | SEC ↗ ×8 |
| 46 | Rhumbline Advisers | 136.33K | +1.6% | $16.06M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 47 | Envestnet Asset Management Inc | 127.96K | +26.6% | $15.08M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 48 | Balyasny Asset Management L.P. | 125.47K | +9.1% | $14.78M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 49 | JPMorgan Chase ✦ | 128.22K | -48.5% | $14.30M | 0.0% | ▼ Trim | 3 | SEC ↗ ×8 |
| 50 | Jennison Associates Llc | 121.24K | -1.9% | $14.28M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 51 | Swiss National Bank | 105.80K | +0.4% | $12.47M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 52 | Nuveen, LLC | 104.99K | -45.5% | $12.37M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 53 | Victory Capital Management Inc | 99.73K | -8.6% | $11.75M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 54 | Osaic Holdings, Inc. | 86.19K | -4.2% | $10.15M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 55 | Ensign Peak Advisors, Inc | 76.02K | -24.9% | $8.96M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 56 | Legal & General Group Plc | 70.89K | -10.1% | $8.35M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 57 | Aberdeen Group plc | 70.50K | +29.8% | $8.31M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 58 | California Public Employees… | 66.76K | -4.8% | $7.87M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 59 | California State Teachers… | 61.86K | +22.1% | $7.29M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 60 | Russell Investments Group, Ltd. | 58.20K | -1.1% | $6.86M | 0.0% | ▼ Trim | 2 | SEC ↗ ×6 |
| 61 | Td Asset Management Inc | 57.62K | +3.3% | $6.79M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 62 | Manufacturers Life Insurance… | 49.94K | -12.5% | $5.88M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 63 | State Board Of Administration Of… | 48.99K | -0.5% | $5.77M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 64 | Amundi | 44.96K | +7.0% | $5.30M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 65 | Susquehanna International Group, Llp | 39.18K | +1233.0% | $4.62M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 66 | Citigroup Inc | 36.36K | -56.6% | $4.28M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 67 | Wells Fargo & Company/Mn | 35.91K | -1.6% | $4.23M | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 68 | LPL Financial LLC | 35.77K | -2.6% | $4.21M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 69 | Jane Street Group, Llc | 34.98K | -5.0% | $4.12M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 70 | State Of Wisconsin Investment Board | 33.66K | -1.6% | $3.97M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 71 | Stifel Financial Corp | 29.54K | +40.7% | $3.48M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 72 | Gotham Asset Management ✦ | 28.75K | -43.1% | $3.39M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 73 | Neuberger Berman Group LLC | 27.37K | -35.4% | $3.22M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 74 | Zurcher Kantonalbank (Zurich… | 26.38K | +19.4% | $3.11M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 75 | Jones Financial Companies Lllp | 26.14K | +832.7% | $2.88M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 76 | Janus Henderson Group Plc | 24.32K | 0.0% | $2.87M | 0.0% | Held | 2 | SEC ↗ |
| 77 | Bank Of Montreal /Can/ | 23.67K | +28.2% | $2.79M | 0.0% | ▲ Add | 2 | SEC ↗ ×7 |
| 78 | Millennium Management ✦ | 22.46K | -96.5% | $2.65M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 79 | Bank Of Nova Scotia | 22.02K | -50.5% | $2.59M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 80 | Hsbc Holdings Plc | 19.77K | +372.3% | $2.31M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 81 | Us Bancorp \De\ | 18.87K | +32.8% | $2.22M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 82 | Commonwealth Equity Services, Llc | 18.19K | +196.1% | $2.14M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 83 | Mirae Asset Global Investments Co.… | 14.56K | -3.2% | $1.72M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 84 | Quantinno Capital Management LP | 11.89K | +5.4% | $1.40M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 85 | Deutsche Bank Ag\ | 11.62K | +14.3% | $1.37M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 86 | Universal- Beteiligungs- und… | 11.04K | -49.5% | $1.32M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 87 | Man Group plc | 11.18K | New | $1.32M | 0.0% | New | 1 | SEC ↗ |
| 88 | Captrust Financial Advisors | 10.92K | +16.6% | $1.29M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 89 | Cetera Investment Advisers | 9.44K | +11.1% | $1.11M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 90 | IMC-Chicago, LLC | 9.01K | New | $1.06M | 0.0% | New | 1 | SEC ↗ |
| 91 | AQR Capital Management ✦ | 8.88K | +2.7% | $1.02M | 0.0% | ▲ Add | 3 | SEC ↗ ×5 |
| 92 | Pictet Asset Management Holding SA | 8.45K | +12.0% | $995,461 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 93 | Pacer Advisors, Inc. | 8.34K | -20.4% | $982,000 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 94 | Pnc Financial Services Group, Inc. | 7.27K | +62.9% | $856,669 | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 95 | Creative Planning | 6.79K | +19.4% | $799,409 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 96 | First Manhattan Co. Llc. | 6.55K | 0.0% | $771,721 | 0.0% | Held | 2 | SEC ↗ |
| 97 | DZ BANK AG Deutsche Zentral… | 5.89K | New | $693,960 | 0.0% | New | 1 | SEC ↗ |
| 98 | Mml Investors Services, Llc | 5.46K | -11.6% | $643,120 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 99 | Tidal Investments LLC | 5.06K | +7.3% | $596,169 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 100 | Wealth Enhancement Advisory… | 4.49K | +3.2% | $529,303 | 0.0% | ▲ Add | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| LMR Partners LLP | $29.82M | 0.3% |
| Man Group plc | $1.32M | 0.0% |
| IMC-Chicago, LLC | $1.06M | 0.0% |
| DZ BANK AG Deutsche Zentral… | $693,960 | 0.0% |
Exited
| Marshall Wace | $84.61M | was 0.1% |
| Norges Bank | $75.72M | was 0.0% |
| Wcm Investment Management, Llc | $10.60M | was 0.0% |
| Swedbank AB | $4.15M | was 0.0% |
| Two Sigma Investments | $1.38M | was 0.0% |
| Bridgewater Associates | $1.29M | was 0.0% |
| Lazard Asset Management Llc | $351,971 | was 0.0% |
| Canada Pension Plan… | $311,334 | was 0.0% |
| Mercer Global Advisors Inc… | $203,514 | was 0.0% |
| TD Waterhouse Canada Inc. | $4,916 | was 0.0% |
| Walleye Trading LLC | $2,949 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 436 holders, 65.14M shares, $6.86B 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.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Oct 05
Loeillot Olivier
Officer, Director · 4.20K sh · $798,380
Oct 05
Loeillot Olivier
Officer, Director · 1.33K sh · $238,274
Sep 24
Loeillot Olivier
Officer, Director · 8.40K sh · $1.60M
Sep 24
Loeillot Olivier
Officer, Director · 4.54K sh · $862,980
Sep 21
Loeillot Olivier
Officer, Director · 5.43K sh · $976,680
Sep 04
Loeillot Olivier
Officer, Director · 3.04K sh · $503,506
Aug 20
Loeillot Olivier
Officer, Director · 5.43K sh · $976,680
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Oct 07
SC 13G/A: FMR LLC
Aug 14
SC 13G/A: PRICE T ROWE ASSOCIATES INC /MD/
Jul 31
SC 13G: VANGUARD CAPITAL MANAGEMENT LLC
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 ·
Get this via the API