Among active 13F managers last quarter, 14 opened and 19 added, while 20 reduced; the largest holder to move was Citadel Advisors LLC (+139%). Over the last 180 days, 4 insiders sold and none bought, a net -$3.1M in open-market trades.
The legs disagree, or only one of them leans.
164 tracked 13F filers disclose a position in GRND as of the latest SEC 13F filings, a combined $474.7M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Shares | Position value | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Citadel Advisors LLC | 4.5M | $64.0M | ▲+139% Added · +2.6M sh | Q2 2026 | |
| 2 | BlackRock, Inc. | 3.7M | $45.1M | ▼−12% Reduced · −513K sh | Q1 2026 | |
| 3 | Norges Bank | 2.0M | $27.4M | ▲+177% Added · +1.3M sh | Q4 2025 | |
| 4 | Quinn Opportunity Partners LLC | 1.9M | $22.5M | ▲+22% Added · +340K sh | Q1 2026 | |
| 5 | Perry Creek Capital LP | 1.8M | $26.6M | ▲+4.0% Added · +71K sh | Q2 2026 | |
| 6 | BWCP, LP | 1.6M | $23.6M | ▲+5.1% Added · +80K sh | Q2 2026 | |
| 7 | Marshall Wace, LLP | 1.6M | $18.9M | ▲+36% Added · +413K sh | Q1 2026 | |
| 8 | Vanguard Capital Management LLC | 1.4M | $17.0M | →New filer Inherited book · not a new buyer | Q1 2026 | |
| 9 | Dimensional Fund Advisors LP | 1.4M | $16.9M | ▲+78% Added · +610K sh | Q1 2026 | |
| 10 | State Street Corp | 896K | $12.9M | ▼−24% Reduced · −288K sh | Q2 2026 | |
| 11 | Geode Capital Management, LLC | 889K | $12.8M | ▲+2.4% Added · +21K sh | Q2 2026 | |
| 12 | Jane Street Group, LLC | 768K | $9.3M | ▲Added Added · +768K sh | Q1 2026 | |
| 13 | Jacobs Levy Equity Management, Inc | 759K | $9.2M | ▼−29% Reduced · −311K sh | Q1 2026 | |
| 14 | Nuveen, LLC | 749K | $9.1M | ▼−21% Reduced · −194K sh | Q1 2026 | |
| 15 | Goldman Sachs Group Inc | 719K | $8.7M | ▲+5.8% Added · +40K sh | Q1 2026 | |
| 16 | Philosophy Capital Management LLC | 713K | $10.2M | ▲New +713K sh | Q2 2026 | |
| 17 | Morgan Stanley | 616K | $7.4M | ▼−23% Reduced · −183K sh | Q1 2026 | |
| 18 | Alberta Investment Management Corp | 550K | $7.9M | —Held | Q2 2026 | |
| 19 | BNP Paribas Asset Management Holding S.A. | 524K | $6.3M | ▼−7.4% Reduced · −42K sh | Q1 2026 | |
| 20 | Squarepoint Ops LLC | 521K | $6.3M | ▼−40% Reduced · −346K sh | Q1 2026 | |
| 21 | Bank Of America Corp | 499K | $6.0M | ▼−56% Reduced · −644K sh | Q1 2026 | |
| 22 | BNP Paribas Financial Markets | 474K | $5.7M | ▲+597% Added · +406K sh | Q1 2026 | |
| 23 | JPMorgan Chase & Co | 466K | $5.7M | ▲+110% Added · +244K sh | Q1 2026 | |
| 24 | Tudor Investment Corp Et Al | 460K | $5.6M | ▲+33% Added · +115K sh | Q1 2026 | |
| 25 | BIT Capital GmbH | 418K | $5.1M | ▼−68% Reduced · −889K sh | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 14 funds opened a new position in GRND and 19 added to an existing one, while 20 reduced. Based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Their position there |
|---|---|---|
| Microsoft CorpMSFT | 85 funds | $145.3B |
| Nvidia CorpNVDA | 81 funds | $215.5B |
| Amazon.com IncAMZN | 81 funds | $104.0B |
| Micron Technology IncMU | 81 funds | $18.3B |
| Meta Platforms Inc-Class AMETA | 80 funds | $60.7B |
| Lam Research CorpLRCX | 79 funds | $17.4B |
| Alphabet Inc-CL AGOOGL | 78 funds | $76.7B |
| Eli Lilly & CoLLY | 78 funds | $43.4B |
| JPMorgan Chase & CoJPM | 78 funds | $31.4B |
| Intel CorpINTC | 78 funds | $10.0B |
| Advanced Micro DevicesAMD | 77 funds | $18.4B |
| Apple IncAAPL | 76 funds | $160.4B |
Ranked by how many of GRND's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in GRND.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 31, 2026 | Balance Austin J | Chief Product Officer | Sell (S) | 90K | $1.4M |
| Aug 19, 2026 | Baer Daniel Brooks | Director | Sell (S) | 4K | $55K |
| Aug 17, 2026 | Katz Zachary | CLO and Head of Global Affairs | Sell (S) | 10K | $161K |
| Aug 3, 2026 | Katz Zachary | CLO and Head of Global Affairs | Sell (S) | 13K | $232K |
| Jul 16, 2026 | Katz Zachary | CLO and Head of Global Affairs | Sell (S) | 10K | $162K |
| Jul 1, 2026 | Katz Zachary | CLO and Head of Global Affairs | Sell (S) | 13K | $208K |
| Jun 29, 2026 | Katz Zachary | CLO and Head of Global Affairs | Sell (S) | 13K | $188K |
| Jun 17, 2026 | Katz Zachary | CLO and Head of Global Affairs | Sell (S) | 10K | $135K |
| Jun 1, 2026 | Richardson Nathan | Director | Sell (S) | 2K | $19K |
| May 8, 2026 | Balance Austin J | Chief Product Officer | Sell (S) 2 lots, same day | 32K | $474K |
| May 1, 2026 | Richardson Nathan | Director | Sell (S) | 2K | $20K |
| Apr 1, 2026 | Richardson Nathan | Director | Sell (S) | 2K | $18K |
One row per insider, day and transaction code; shares and value are summed across the lots. Every lot is on the full insider page and in the filing.
Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.
Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive
| Source | Buying | Selling | Net |
|---|---|---|---|
13F funds Top 100 holders by value, passive included; the hero counts active managers only | 32 | 37 | – |
Insiders Form 4 open-market | 0 | 4 | -$3.1M |
US House STOCK Act trades | 0 | 0 | $0 |
Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.
Connected entities for GRND
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/GRND/capital-change-brief"
Use Arkolith's capital_change_brief for GRND. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + the live filing stream, joined for GRND. Filings are public domain, sourced to SEC EDGAR.