Security record · archived quarter
ASPI
ASP Isotopes Inc. Common Stock · Basic Materials · Chemicals
73Tracked holders
0Δ holders
37.51MShares held
$165.79MReported value
+5New positions
−5Exits
Momentum inputs (comparable managers): holder breadth 0.0% · share flow -7.2% · net new positions 0.0% — formula
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 |
|---|---|---|---|---|---|---|
| Q2 2026 | 73 | +3 | 40.98M | $254.70M | +8 | −5 |
| Q1 2026 | 73 | 0 | 37.51M | $165.79M | +5 | −5 |
| Q4 2025 | 73 | -2 | 41.79M | $223.56M | +1 | −3 |
| Q3 2025 | 16 | +2 | 19.49M | $187.45M | +2 | — |
| Q2 2025 | 11 | +1 | 10.37M | $76.34M | +1 | — |
| Q1 2025 | 7 | 0 | 2.75M | $12.89M | — | — |
| Q4 2024 | 7 | +2 | 2.85M | $12.93M | +2 | — |
| Q3 2024 | 4 | 0 | 2.17M | $6.03M | +1 | −1 |
| Q2 2024 | 4 | — | 1.51M | $4.59M | — | — |
Who holds it · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 8.33M | +22.7% | $36.81M | 0.0% | ▲ Add | 4 | SEC ↗ ×10 |
| 2 | Vanguard Capital Management Llc | 5.06M | — | $22.37M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | UBS Group AG | 2.84M | +18.1% | $12.56M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 4 | Geode Capital Management ✦ (passive) | 2.74M | +14.9% | $12.12M | 0.0% | ▲ Add | 8 | SEC ↗ ×2 |
| 5 | Alyeska Investment Group, L.P. | 2.69M | -45.0% | $11.90M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 6 | State Street Global Advisors ✦ (passive) | 2.32M | +25.9% | $10.26M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 7 | Morgan Stanley ✦ | 1.58M | -7.8% | $6.97M | 0.0% | ▼ Trim | 3 | SEC ↗ ×6 |
| 8 | Susquehanna International Group, Llp | 1.06M | -30.3% | $4.67M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 9 | Barclays Plc | 1.01M | +99.9% | $4.48M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 10 | Northern Trust Corp | 937.52K | +25.7% | $4.14M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 11 | Charles Schwab Investment… | 897.24K | +1.3% | $3.97M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 12 | BNP Paribas Asset Management… | 887.25K | -6.0% | $3.92M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 13 | Citadel Advisors ✦ | 768.01K | -55.5% | $3.39M | 0.0% | ▼ Trim | 4 | SEC ↗ ×2 |
| 14 | Jane Street Group, Llc | 684.48K | -56.9% | $3.03M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 15 | Group One Trading Llc | 595.62K | +34.0% | $2.63M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 16 | Goldman Sachs Group ✦ | 526.79K | -69.3% | $2.33M | 0.0% | ▼ Trim | 3 | SEC ↗ ×3 |
| 17 | Pacer Advisors, Inc. | 503.93K | +24.6% | $2.23M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 18 | Bank of New York Mellon Corp | 289.01K | +18.4% | $1.28M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 19 | IMC-Chicago, LLC | 268.47K | -8.8% | $1.19M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 20 | JPMorgan Chase ✦ | 273.46K | +40.6% | $1.15M | 0.0% | ▲ Add | 3 | SEC ↗ ×5 |
| 21 | Bank Of Montreal /Can/ | 231.77K | +96.6% | $1.02M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 22 | Swiss National Bank | 210.10K | 0.0% | $928,642 | 0.0% | Held | 2 | SEC ↗ |
| 23 | Nuveen, LLC | 207.44K | +13.5% | $916,893 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 24 | Bank Of America Corp /De/ | 169.00K | -26.8% | $746,966 | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 25 | Tudor Investment Corp Et Al | 161.03K | +21.1% | $711,753 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 26 | Sei Investments Co | 148.65K | +93.0% | $657,024 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 27 | Russell Investments Group, Ltd. | 145.63K | +0.1% | $643,670 | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 28 | Stifel Financial Corp | 120.53K | +9.7% | $532,723 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 29 | Rhumbline Advisers | 117.68K | +15.9% | $520,127 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 30 | Cetera Investment Advisers | 114.82K | +61.0% | $507,491 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 31 | UBS AM, a distinct business unit of… | 112.48K | +9.9% | $497,144 | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 32 | Deutsche Bank Ag\ | 93.66K | +36.5% | $413,968 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 33 | National Bank Of Canada /Fi/ | 86.12K | +38.0% | $379,768 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 34 | T. Rowe Price ✦ | 80.64K | +64.4% | $357,000 | 0.0% | ▲ Add | 8 | SEC ↗ |
| 35 | Peak6 Llc | 79.21K | +326.8% | $350,117 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 36 | California State Teachers… | 78.21K | +1.3% | $345,697 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 37 | Balyasny Asset Management L.P. | 76.52K | -5.0% | $338,223 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 38 | Citigroup Inc | 75.16K | -0.2% | $332,216 | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 39 | Squarepoint Ops LLC | 70.60K | +156.9% | $312,039 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 40 | Simplex Trading, Llc | 61.65K | -34.2% | $272,484 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 41 | Invesco Ltd. | 56.63K | -4.9% | $250,323 | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 42 | Legal & General Group Plc | 55.43K | -27.6% | $244,982 | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 43 | Osaic Holdings, Inc. | 53.97K | +6.5% | $238,556 | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 44 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 53.33K | +24.2% | $235,727 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 45 | Wells Fargo & Company/Mn | 49.73K | -62.2% | $219,820 | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 46 | Alliancebernstein L.P. | 38.76K | New | $207,366 | 0.0% | New | 1 | SEC ↗ |
| 47 | LPL Financial LLC | 44.17K | -7.2% | $195,227 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 48 | Creative Planning | 41.58K | +298.7% | $183,784 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 49 | Janus Henderson Group Plc | 39.00K | 0.0% | $172,185 | 0.0% | Held | 2 | SEC ↗ |
| 50 | Royal Bank Of Canada | 37.95K | +18.4% | $167,000 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 51 | Quantinno Capital Management LP | 33.07K | -41.8% | $146,156 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 52 | Manufacturers Life Insurance… | 30.50K | +8.8% | $134,823 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 53 | New York State Common Retirement… | 29.20K | +104.2% | $129,064 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 54 | Bnp Paribas Financial Markets | 27.66K | +37.8% | $122,240 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 55 | AQR Capital Management ✦ | 23.80K | -18.9% | $105,183 | 0.0% | ▼ Trim | 7 | SEC ↗ ×3 |
| 56 | Zurcher Kantonalbank (Zurich… | 23.60K | 0.0% | $104,312 | 0.0% | Held | 2 | SEC ↗ |
| 57 | Neuberger Berman Group LLC | 19.97K | -6.8% | $88,276 | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 58 | Voya Investment Management Llc | 19.15K | +18.8% | $84,634 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 59 | Prudential Financial Inc | 16.84K | New | $74,433 | 0.0% | New | 1 | SEC ↗ |
| 60 | ProShare Advisors LLC | 16.48K | -2.5% | $72,844 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 61 | Mercer Global Advisors Inc /Adv | 14.78K | -42.2% | $65,323 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 62 | Fidelity (FMR) ✦ | 14.36K | +13.0% | $63,461 | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 63 | Victory Capital Management Inc | 12.81K | +14.0% | $56,603 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 64 | Captrust Financial Advisors | 12.31K | New | $54,428 | 0.0% | New | 1 | SEC ↗ |
| 65 | Pictet Asset Management Holding SA | 11.33K | 0.0% | $50,096 | 0.0% | Held | 2 | SEC ↗ |
| 66 | Commonwealth Equity Services, Llc | 10.67K | -76.2% | $47,160 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 67 | Wealthfront Advisers LLC | 10.15K | New | $44,859 | 0.0% | New | 1 | SEC ↗ |
| 68 | Rockefeller Capital Management L.P. | 5.02K | +21.8% | $22,189 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 69 | Jones Financial Companies Lllp | 2.85K | -41.6% | $12,463 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 70 | Cwm, Llc | 1.69K | +83.9% | $7,487 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 71 | Optiver Holding B.V. | 710 | +73.6% | $3,138 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 72 | Pnc Financial Services Group, Inc. | 540 | +480.6% | $2,387 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 73 | Us Bancorp \De\ | 60 | New | $265 | 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
| Alliancebernstein L.P. | $207,366 | 0.0% |
| Prudential Financial Inc | $74,433 | 0.0% |
| Captrust Financial Advisors | $54,428 | 0.0% |
| Wealthfront Advisers LLC | $44,859 | 0.0% |
| Us Bancorp \De\ | $265 | 0.0% |
Exited
| Marshall Wace | $4.38M | was 0.0% |
| Two Sigma Investments | $1.91M | was 0.0% |
| D. E. Shaw & Co. | $289,098 | was 0.0% |
| Raymond James Financial Inc | $158,178 | was 0.0% |
| Mml Investors Services, Llc | $78,035 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 175 holders, 63.06M shares, $277.19M 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)
Sep 30
Ryan Robert John Andrew
Director · 15.00K sh @ 2.68 · $40,200
Sep 28
Ryan Robert John Andrew
Director · 8.00K sh @ 2.70 · $21,600
Open-market sales (S)
Sep 08
Ainscow Robert
Officer · 8.44K sh · $36,216
Sep 04
Mann Paul Elliot
Officer, Director · 83.76K sh · $343,412
Sep 03
Mann Paul Elliot
Officer, Director · 83.76K sh · $328,331
Sep 02
Ainscow Donald George
Officer · 23.68K sh · $92,107
Sep 02
Ainscow Robert
Officer · 25.00K sh · $97,625
Sep 02
Mann Paul Elliot
Officer, Director · 83.76K sh · $327,494
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
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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