Security record
RGEN
Repligen Corporation · Healthcare · Medical - Instruments & Supplies
125Tracked holders
+9Δ holders
40.15MShares held
$5.47BReported value
+16New positions
−8Exits
Momentum inputs (comparable managers):
holder breadth +7.8% ·
share flow -3.7% ·
net new positions +6.4%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
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 | 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 | — |
| Q4 2024 | 12 | 0 | 12.86M | $1.85B | +1 | −1 |
| Q3 2024 | 11 | -3 | 9.29M | $1.38B | — | −3 |
| Q2 2024 | 14 | — | 8.37M | $1.05B | — | — |
Who holds it · Q2 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 5.38M | -10.2% | $734.72M | 0.0% | ▼ Trim | 5 | SEC ↗ ×16 |
| 2 | Fidelity (FMR) ✦ | 3.33M | +15.2% | $453.89M | 0.0% | ▲ Add | 5 | SEC ↗ ×6 |
| 3 | Vanguard Capital Management Llc | 2.41M | +0.6% | $328.98M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 4 | State Street Global Advisors ✦ (passive) | 1.80M | +1.3% | $245.68M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 5 | T. Rowe Price ✦ | 1.75M | -64.1% | $239.08M | 0.0% | ▼ Trim | 9 | SEC ↗ ×2 |
| 6 | Massachusetts Financial Services Co… | 1.62M | +15.7% | $220.61M | 0.1% | ▲ Add | 3 | SEC ↗ ×6 |
| 7 | Ameriprise Financial Inc | 1.58M | +70.3% | $215.05M | 0.0% | ▲ Add | 3 | SEC ↗ ×7 |
| 8 | Bank of New York Mellon Corp | 1.52M | -0.6% | $207.78M | 0.0% | ▼ Trim | 3 | SEC ↗ ×20 |
| 9 | Invesco Ltd. | 1.39M | +8.5% | $189.28M | 0.0% | ▲ Add | 3 | SEC ↗ ×7 |
| 10 | Holocene Advisors, LP | 1.29M | +82.3% | $176.31M | 0.4% | ▲ Add | 3 | SEC ↗ |
| 11 | Geode Capital Management ✦ (passive) | 1.06M | -0.2% | $145.00M | 0.0% | ▼ Trim | 9 | SEC ↗ ×2 |
| 12 | Goldman Sachs Group ✦ | 965.41K | +48.2% | $131.72M | 0.0% | ▲ Add | 4 | SEC ↗ ×5 |
| 13 | Dimensional Fund Advisors Lp | 949.86K | +11.1% | $129.60M | 0.0% | ▲ Add | 3 | SEC ↗ ×5 |
| 14 | Franklin Resources Inc | 890.22K | -25.4% | $121.46M | 0.0% | ▼ Trim | 3 | SEC ↗ ×5 |
| 15 | UBS Group AG | 795.01K | +18.6% | $108.47M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 16 | Bamco Inc /Ny/ | 748.47K | +36.5% | $102.12M | 0.2% | ▲ Add | 3 | SEC ↗ |
| 17 | Schroder Investment Management Group | 696.17K | +33.9% | $94.99M | 0.1% | ▲ Add | 2 | SEC ↗ ×2 |
| 18 | Alliancebernstein L.P. | 795.28K | -4.4% | $93.70M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 19 | First Trust Advisors Lp | 634.22K | +0.7% | $86.53M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 20 | Norges Bank ✦ (passive) | 575.23K | New | $78.48M | 0.0% | New | 1 | SEC ↗ |
| 21 | Voya Investment Management Llc | 549.20K | -11.8% | $74.93M | 0.1% | ▼ Trim | 3 | SEC ↗ ×3 |
| 22 | Morgan Stanley ✦ | 543.24K | -20.6% | $74.12M | 0.0% | ▼ Trim | 4 | SEC ↗ ×17 |
| 23 | Charles Schwab Investment… | 481.74K | +6.3% | $65.73M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 24 | Northern Trust Corp | 444.15K | -0.1% | $60.60M | 0.0% | ▼ Trim | 3 | SEC ↗ ×6 |
| 25 | JPMorgan Chase ✦ | 427.77K | +233.6% | $58.95M | 0.0% | ▲ Add | 4 | SEC ↗ ×7 |
| 26 | Bank Of America Corp /De/ | 426.29K | +12.7% | $58.16M | 0.0% | ▲ Add | 3 | SEC ↗ ×5 |
| 27 | Citadel Advisors ✦ | 376.31K | -65.8% | $51.34M | 0.0% | ▼ Trim | 9 | SEC ↗ ×2 |
| 28 | Sei Investments Co | 373.31K | +37.2% | $50.93M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 29 | BNP Paribas Asset Management… | 356.94K | -5.3% | $48.70M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 30 | Balyasny Asset Management L.P. | 355.51K | +183.3% | $48.51M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 31 | PRIMECAP Management ✦ | 323.27K | +37.5% | $44.11M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 32 | Marshall Wace ✦ | 282.11K | New | $38.49M | 0.0% | New | 1 | SEC ↗ ×2 |
| 33 | Daiwa Securities Group Inc. | 265.97K | +10.9% | $36.29M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 34 | LMR Partners LLP | 228.60K | -9.7% | $31.19M | 0.3% | ▼ Trim | 2 | SEC ↗ ×2 |
| 35 | American Century Companies Inc | 213.00K | -9.5% | $29.06M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 36 | Bnp Paribas Financial Markets | 176.84K | -0.4% | $24.13M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 37 | Raymond James Financial Inc | 172.83K | +2.4% | $23.58M | 0.0% | ▲ Add | 3 | SEC ↗ ×5 |
| 38 | Nomura Asset Management… | 168.26K | -7.2% | $22.96M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 39 | Point72 Asset Management ✦ | 166.16K | -70.8% | $22.67M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 40 | UBS AM, a distinct business unit of… | 161.71K | -1.2% | $22.06M | 0.0% | ▼ Trim | 3 | SEC ↗ ×9 |
| 41 | Fifth Third Bancorp | 157.42K | -2.3% | $21.48M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 42 | Allspring Global Investments… | 153.11K | -45.4% | $21.28M | 0.0% | ▼ Trim | 3 | SEC ↗ ×3 |
| 43 | Barclays Plc | 155.75K | -19.7% | $21.25M | 0.0% | ▼ Trim | 3 | SEC ↗ ×3 |
| 44 | Loomis Sayles & Co L P | 148.68K | -2.6% | $20.29M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 45 | Baird Financial Group, Inc. | 144.57K | -15.8% | $19.73M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 46 | Gotham Asset Management ✦ | 142.61K | +396.1% | $19.46M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 47 | Assenagon Asset Management S.A. | 141.99K | New | $19.37M | 0.0% | New | 1 | SEC ↗ ×2 |
| 48 | Envestnet Asset Management Inc | 140.41K | +9.7% | $19.16M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 49 | Rhumbline Advisers | 134.37K | -1.4% | $18.33M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 50 | Principal Financial Group Inc | 120.38K | -24.6% | $16.43M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 51 | Nuveen, LLC | 117.52K | +11.9% | $16.03M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 52 | New York State Common Retirement… | 117.10K | -33.6% | $15.98M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 53 | Osaic Holdings, Inc. | 115.14K | +33.6% | $15.71M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 54 | Royal Bank Of Canada | 111.76K | -25.4% | $15.25M | 0.0% | ▼ Trim | 3 | SEC ↗ ×9 |
| 55 | Victory Capital Management Inc | 109.43K | +9.7% | $14.93M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 56 | Swiss National Bank | 104.70K | -1.0% | $14.29M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 57 | D. E. Shaw & Co. ✦ | 83.33K | New | $11.37M | 0.0% | New | 1 | SEC ↗ ×2 |
| 58 | Duquesne Family Office ✦ | 77.40K | New | $10.56M | 0.2% | New | 1 | SEC ↗ |
| 59 | Jennison Associates Llc | 75.00K | -38.1% | $10.23M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 60 | Ensign Peak Advisors, Inc | 69.69K | -8.3% | $9.51M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 61 | Legal & General Group Plc | 68.99K | -2.7% | $9.41M | 0.0% | ▼ Trim | 3 | SEC ↗ ×3 |
| 62 | California Public Employees… | 61.47K | -7.9% | $8.39M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 63 | Aberdeen Group plc | 48.40K | -31.3% | $6.60M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 64 | State Board Of Administration Of… | 48.09K | -1.8% | $6.56M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 65 | Td Asset Management Inc | 47.27K | -18.0% | $6.45M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 66 | Walleye Trading LLC | 43.27K | New | $5.90M | 0.1% | New | 1 | SEC ↗ |
| 67 | Manufacturers Life Insurance… | 38.17K | -23.6% | $5.21M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 68 | Jane Street Group, Llc | 36.76K | +5.1% | $5.02M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 69 | Stifel Financial Corp | 34.77K | +17.7% | $4.74M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 70 | Wells Fargo & Company/Mn | 33.72K | -6.1% | $4.60M | 0.0% | ▼ Trim | 3 | SEC ↗ ×4 |
| 71 | State Of Wisconsin Investment Board | 31.69K | -5.8% | $4.32M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 72 | Jones Financial Companies Lllp | 28.18K | +7.8% | $4.14M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 73 | Zurcher Kantonalbank (Zurich… | 28.98K | +9.8% | $3.95M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 74 | Russell Investments Group, Ltd. | 27.96K | -52.0% | $3.81M | 0.0% | ▼ Trim | 3 | SEC ↗ ×4 |
| 75 | Quantinno Capital Management LP | 27.69K | +132.9% | $3.78M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 76 | LPL Financial LLC | 27.58K | -22.9% | $3.76M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 77 | Bank Of Nova Scotia | 25.99K | +18.1% | $3.55M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 78 | Tudor Investment Corp Et Al | 25.68K | New | $3.50M | 0.0% | New | 1 | SEC ↗ |
| 79 | Hsbc Holdings Plc | 24.17K | +22.2% | $3.30M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 80 | Connor, Clark & Lunn Investment… | 23.58K | New | $3.22M | 0.0% | New | 1 | SEC ↗ |
| 81 | Susquehanna International Group, Llp | 21.72K | -44.6% | $2.96M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 82 | Us Bancorp \De\ | 20.38K | +8.0% | $2.78M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 83 | Man Group plc | 20.34K | +81.9% | $2.78M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 84 | Bank Of Montreal /Can/ | 20.02K | -15.4% | $2.73M | 0.0% | ▼ Trim | 3 | SEC ↗ ×6 |
| 85 | Citigroup Inc | 19.46K | -46.5% | $2.66M | 0.0% | ▼ Trim | 3 | SEC ↗ ×3 |
| 86 | Commonwealth Equity Services, Llc | 18.06K | -0.7% | $2.46M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 87 | Arrowstreet Capital ✦ | 17.82K | New | $2.43M | 0.0% | New | 1 | SEC ↗ |
| 88 | Captrust Financial Advisors | 13.12K | +20.2% | $1.79M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 89 | Cetera Investment Advisers | 12.24K | +29.7% | $1.67M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 90 | Deutsche Bank Ag\ | 11.69K | +0.7% | $1.60M | 0.0% | ▲ Add | 3 | SEC ↗ ×5 |
| 91 | Corient Private Wealth LP | 11.29K | +419.4% | $1.54M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 92 | Two Sigma Investments ✦ | 9.90K | New | $1.35M | 0.0% | New | 1 | SEC ↗ |
| 93 | Simplex Trading, Llc | 9.82K | +987.5% | $1.34M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 94 | Creative Planning | 9.04K | +33.2% | $1.23M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 95 | AQR Capital Management ✦ | 8.94K | +0.6% | $1.21M | 0.0% | ▲ Add | 4 | SEC ↗ ×4 |
| 96 | Tidal Investments LLC | 8.86K | +75.2% | $1.21M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 97 | Pictet Asset Management Holding SA | 8.04K | -4.9% | $1.10M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 98 | Pnc Financial Services Group, Inc. | 7.36K | +1.2% | $1.00M | 0.0% | ▲ Add | 3 | SEC ↗ ×5 |
| 99 | Mml Investors Services, Llc | 7.22K | +32.3% | $985,301 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 100 | Universal- Beteiligungs- und… | 6.73K | -39.0% | $935,237 | 0.0% | ▼ Trim | 3 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Norges Bank | $78.48M | 0.0% |
| Marshall Wace | $38.49M | 0.0% |
| Assenagon Asset Management… | $19.37M | 0.0% |
| D. E. Shaw & Co. | $11.37M | 0.0% |
| Duquesne Family Office | $10.56M | 0.2% |
| Walleye Trading LLC | $5.90M | 0.1% |
| Tudor Investment Corp Et Al | $3.50M | 0.0% |
| Connor, Clark & Lunn… | $3.22M | 0.0% |
| Arrowstreet Capital | $2.43M | 0.0% |
| Two Sigma Investments | $1.35M | 0.0% |
Exited
| Artisan Partners Limited… | $22.40M | was 0.0% |
| Amundi | $5.30M | was 0.0% |
| Millennium Management | $2.65M | was 0.0% |
| Mirae Asset Global… | $1.72M | was 0.0% |
| IMC-Chicago, LLC | $1.06M | was 0.0% |
| Capstone Investment Advisors… | $354,049 | was 0.0% |
| HighTower Advisors, LLC | $207,279 | was 0.0% |
| Nomura Asset Management Co Ltd | $15,317 | 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: Q2 2026 ·
Methodology ·
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