Among active 13F managers last quarter, 12 opened and 22 added, while 6 reduced; the largest holder to move was Hamilton Lane Advisors LLC (−8.5%). Over the last 180 days, 6 insiders bought and none sold, a net +$915K in open-market trades.
Funds lean in and no leg opposes.
154 tracked 13F filers disclose a position in GRNT as of the latest SEC 13F filings, a combined $487.2M 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 | Grey Rock Energy Management, LLC | 55.3M | $243.7M | —Held | Q2 2026 | |
| 2 | Hamilton Lane Advisors LLC | 6.8M | $29.8M | ▼−8.5% Reduced · −625K sh | Q2 2026 | |
| 3 | Utah Retirement Systems | 5.2M | $23.1M | —Held | Q2 2026 | |
| 4 | BlackRock, Inc. | 5.0M | $21.9M | ▲+5.5% Added · +258K sh | Q2 2026 | |
| 5 | Dimensional Fund Advisors LP | 3.3M | $19.4M | ▲+16% Added · +448K sh | Q1 2026 | |
| 6 | Vanguard Capital Management LLC | 3.1M | $13.6M | ▼−0.1% Reduced · −3K sh | Q2 2026 | |
| 7 | American Century Companies Inc | 3.0M | $17.6M | ▲+6.7% Added · +187K sh | Q1 2026 | |
| 8 | Vanguard Portfolio Management LLC | 1.6M | $7.2M | ▲+11% Added · +164K sh | Q2 2026 | |
| 9 | Geode Capital Management, LLC | 1.6M | $7.1M | ▲+6.1% Added · +92K sh | Q2 2026 | |
| 10 | Millennium Management LLC | 1.4M | $8.0M | ▲+109% Added · +709K sh | Q1 2026 | |
| 11 | State Street Corp | 1.2M | $5.3M | ▲+12% Added · +126K sh | Q2 2026 | |
| 12 | Arrowstreet Capital, Limited Partnership | 1.1M | $6.6M | ▲New +1.1M sh | Q1 2026 | |
| 13 | AQR Capital Management LLC | 1.0M | $6.0M | ▼−1.4% Reduced · −14K sh | Q1 2026 | |
| 14 | Bank of New York Mellon Corp | 950K | $5.6M | ▲+1.3% Added · +12K sh | Q1 2026 | |
| 15 | CWA Asset Management Group, LLC | 912K | $4.0M | ▲+16% Added · +125K sh | Q2 2026 | |
| 16 | Nuveen, LLC | 815K | $4.8M | ▲+1.8% Added · +14K sh | Q1 2026 | |
| 17 | Jacobs Levy Equity Management, Inc | 716K | $3.2M | ▲+2.0% Added · +14K sh | Q2 2026 | |
| 18 | Goldman Sachs Group Inc | 692K | $4.1M | ▼−16% Reduced · −136K sh | Q1 2026 | |
| 19 | Trexquant Investment LP | 643K | $2.8M | ▲+352% Added · +501K sh | Q2 2026 | |
| 20 | Zazove Associates LLC | 509K | $2.2M | ▼−63% Reduced · −867K sh | Q2 2026 | |
| 21 | Connor, Clark & Lunn Investment Management Ltd. | 501K | $2.2M | ▲+105% Added · +257K sh | Q2 2026 | |
| 22 | Charles Schwab Investment Management Inc | 499K | $2.9M | ▲+0.6% Added · +3K sh | Q1 2026 | |
| 23 | Two Sigma Investments, LP | 468K | $2.7M | ▲+49% Added · +153K sh | Q1 2026 | |
| 24 | Vanguard Fiduciary Trust Co | 453K | $2.0M | ▲+4.8% Added · +21K sh | Q2 2026 | |
| 25 | Northern Trust Corp | 435K | $2.6M | ▲+5.1% Added · +21K 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, 12 funds opened a new position in GRNT and 22 added to an existing one, while 6 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 |
|---|---|---|
| Chevron CorpCVX | 73 funds | $13.7B |
| Nvidia CorpNVDA | 71 funds | $236.8B |
| Microsoft CorpMSFT | 71 funds | $143.2B |
| Alphabet Inc-CL AGOOGL | 71 funds | $95.6B |
| Meta Platforms Inc-Class AMETA | 71 funds | $60.0B |
| Tesla IncTSLA | 71 funds | $38.8B |
| Visa Inc-Class A SharesV | 71 funds | $33.2B |
| Apple IncAAPL | 70 funds | $165.6B |
| Amazon.com IncAMZN | 70 funds | $110.9B |
| Broadcom IncAVGO | 70 funds | $97.6B |
| JPMorgan Chase & CoJPM | 70 funds | $32.7B |
| Costco Wholesale CorpCOST | 70 funds | $19.9B |
Ranked by how many of GRNT's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in GRNT.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Sep 4, 2026 | Kettler Ronald Kyle | Chief Financial Officer | Buy (P) | 6K | $30K |
| Sep 1, 2026 | McCartney John | Director | Buy (P) | 5K | $25K |
| Aug 13, 2026 | Everard Michele J | Director | Buy (P) | 1K | $5K |
| Aug 13, 2026 | McCartney John | Director | Buy (P) | 2K | $10K |
| Jun 12, 2026 | Miller Matthew Reade | Director | Buy (P) | 696 | $3K |
| Jun 10, 2026 | McCartney John | Director | Buy (P) | 4K | $20K |
| Jun 9, 2026 | Miller Matthew Reade | Director | Buy (P) | 11K | $50K |
| May 27, 2026 | Kettler Ronald Kyle | Chief Financial Officer | Buy (P) | 6K | $30K |
| May 21, 2026 | McCartney John | Director | Buy (P) | 4K | $22K |
| May 19, 2026 | McCartney John | Director | Buy (P) | 3K | $17K |
| May 18, 2026 | Perry Griffin | Director | Buy (P) | 100K | $549K |
| May 14, 2026 | Everard Michele J | Director | Buy (P) | 1K | $5K |
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 | 48 | 26 | – |
Insiders Form 4 open-market | 6 | 0 | +$915K |
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 GRNT
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/GRNT/capital-change-brief"
Use Arkolith's capital_change_brief for GRNT. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for GRNT. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.