Among active 13F managers last quarter, 11 opened and 20 added, while 19 reduced; the largest holder to move was Ariel Investments, LLC (+0.4%). Over the last 180 days, 2 insiders sold and none bought, a net -$8.1M in open-market trades.
The legs disagree, or only one of them leans.
136 tracked 13F filers disclose a position in GCMG as of the latest SEC 13F filings, a combined $560.4M 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 | Cantor Fitzgerald, L. P. | 6.5M | $63.2M | —Held | Q1 2026 | |
| 2 | Ameriprise Financial Inc | 5.3M | $51.7M | —Held | Q1 2026 | |
| 3 | BlackRock, Inc. | 4.8M | $58.6M | ▲+5.6% Added · +252K sh | Q2 2026 | |
| 4 | Ariel Investments, LLC | 4.4M | $54.3M | ▲+0.4% Added · +19K sh | Q2 2026 | |
| 5 | Sumitomo Mitsui Trust Group, Inc. | 3.8M | $36.8M | —Held | Q1 2026 | |
| 6 | Vanguard Portfolio Management LLC | 2.6M | $32.5M | ▲+0.6% Added · +15K sh | Q2 2026 | |
| 7 | Vanguard Capital Management LLC | 2.6M | $31.9M | ▼−2.5% Reduced · −66K sh | Q2 2026 | |
| 8 | Goldman Sachs Group Inc | 1.8M | $17.5M | ▲+17% Added · +261K sh | Q1 2026 | |
| 9 | Two Sigma Investments, LP | 1.6M | $15.8M | ▲+90% Added · +766K sh | Q1 2026 | |
| 10 | State Street Corp | 1.6M | $19.7M | ▼−2.8% Reduced · −47K sh | Q2 2026 | |
| 11 | Geode Capital Management, LLC | 1.5M | $19.0M | ▲+2.5% Added · +38K sh | Q2 2026 | |
| 12 | Massachusetts Financial Services Co | 1.5M | $14.8M | ▼−1.8% Reduced · −28K sh | Q1 2026 | |
| 13 | Qube Research & Technologies Ltd | 926K | $9.1M | ▼−9.6% Reduced · −99K sh | Q1 2026 | |
| 14 | Morgan Stanley | 913K | $8.9M | ▼−6.5% Reduced · −63K sh | Q1 2026 | |
| 15 | Dimensional Fund Advisors LP | 824K | $8.1M | ▲+17% Added · +122K sh | Q1 2026 | |
| 16 | Northern Trust Corp | 663K | $6.5M | ▲+16% Added · +91K sh | Q1 2026 | |
| 17 | North Reef Capital Management LP | 630K | $7.8M | ▲~0% Added · +1 sh | Q2 2026 | |
| 18 | Charles Schwab Investment Management Inc | 513K | $5.0M | ▲+19% Added · +80K sh | Q1 2026 | |
| 19 | Nuveen, LLC | 494K | $4.8M | ▼−1.6% Reduced · −8K sh | Q1 2026 | |
| 20 | Arrowstreet Capital, Limited Partnership | 459K | $4.5M | ▲+9.1% Added · +38K sh | Q1 2026 | |
| 21 | William Blair Investment Management, LLC | 438K | $5.4M | ▲New +438K sh | Q2 2026 | |
| 22 | Algert Global LLC | 434K | $5.3M | ▲37× Added · +422K sh | Q2 2026 | |
| 23 | Vanguard Fiduciary Trust Co | 422K | $5.2M | ▼−0.7% Reduced · −3K sh | Q2 2026 | |
| 24 | Marshall Wace, LLP | 407K | $4.0M | ▼−50% Reduced · −406K sh | Q1 2026 | |
| 25 | Jane Street Group, LLC | 405K | $4.0M | ▲+636% Added · +350K 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, 11 funds opened a new position in GCMG and 20 added to an existing one, while 19 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 |
|---|---|---|
| JPMorgan Chase & CoJPM | 69 funds | $34.0B |
| Microsoft CorpMSFT | 68 funds | $146.5B |
| Micron Technology IncMU | 68 funds | $33.6B |
| Nvidia CorpNVDA | 67 funds | $237.3B |
| Apple IncAAPL | 67 funds | $168.9B |
| Amazon.com IncAMZN | 67 funds | $116.4B |
| Broadcom IncAVGO | 67 funds | $98.1B |
| Visa Inc-Class A SharesV | 67 funds | $35.8B |
| Alphabet Inc-CL AGOOGL | 66 funds | $103.2B |
| Tesla IncTSLA | 66 funds | $39.5B |
| Costco Wholesale CorpCOST | 66 funds | $21.0B |
| Chevron CorpCVX | 66 funds | $14.4B |
Ranked by how many of GCMG's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in GCMG.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Sep 3, 2026 | Sullivan Kathleen Patricia | Principal Accounting Officer | Sell (S) | 15K | $198K |
| Sep 2, 2026 | Sullivan Kathleen Patricia | Principal Accounting Officer | Sell (S) | 25K | $328K |
| Jul 16, 2026 | Cantor Fitzgerald, L. P. | 10% Owner | Sell (S) | 427K | $5.8M |
| Jul 15, 2026 | Cantor Fitzgerald, L. P. | 10% Owner | Sell (S) 2 lots, same day | 131K | $1.8M |
| Feb 27, 2026 | Blanton Angela | Director | Sell (S) | 2K | $22K |
| Feb 26, 2026 | Blanton Angela | Director | Sell (S) | 39K | $467K |
| Dec 17, 2025 | Bentley Pamela L | Chief Financial Officer | Sell (S) | 40K | $465K |
| Dec 16, 2025 | Bentley Pamela L | Chief Financial Officer | Sell (S) | 40K | $464K |
| Oct 6, 2025 | Lutnick Howard W | 10% Owner | Sell (S) | 6.5M | — |
| Aug 12, 2025 | Sullivan Kathleen Patricia | Principal Accounting Officer | Sell (S) | 6K | $78K |
| Jun 2, 2025 | Blanton Angela | Director | Sell (S) | 14K | $176K |
| Sep 9, 2024 | Sullivan Kathleen Patricia | Principal Accounting Officer | Sell (S) | 5K | $54K |
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 | 45 | 35 | – |
Insiders Form 4 open-market | 0 | 2 | -$8.1M |
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 GCMG
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/GCMG/capital-change-brief"
Use Arkolith's capital_change_brief for GCMG. 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 GCMG. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.