Among active 13F managers last quarter, 3 opened and 20 added, while 22 reduced; the largest holder to move was Renaissance Technologies LLC (−4.5%). Over the last 180 days, 2 insiders sold and none bought, a net -$5.0M in open-market trades.
The legs disagree, or only one of them leans.
213 tracked 13F filers disclose a position in REX as of the latest SEC 13F filings, a combined $1.1B 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 | BlackRock, Inc. | 5.7M | $255.6M | ▲+3.1% Added · +169K sh | Q2 2026 | |
| 2 | Dimensional Fund Advisors LP | 1.9M | $86.4M | ▼−3.5% Reduced · −68K sh | Q1 2026 | |
| 3 | State Street Corp | 1.6M | $71.0M | ▲+8.3% Added · +120K sh | Q2 2026 | |
| 4 | Renaissance Technologies LLC | 1.5M | $69.4M | ▼−4.5% Reduced · −72K sh | Q1 2026 | |
| 5 | Vanguard Portfolio Management LLC | 1.3M | $58.0M | ▲+2.5% Added · +31K sh | Q2 2026 | |
| 6 | Vanguard Capital Management LLC | 1.2M | $56.1M | ▲+1.6% Added · +19K sh | Q2 2026 | |
| 7 | Systematic Financial Management LP | 1.0M | $46.8M | ▼−6.5% Reduced · −72K sh | Q2 2026 | |
| 8 | Mangrove Partners Im, LLC | 1.0M | $45.8M | —Held | Q2 2026 | |
| 9 | Geode Capital Management, LLC | 869K | $39.2M | ▲+4.0% Added · +34K sh | Q2 2026 | |
| 10 | D. E. Shaw & Co., Inc. | 644K | $29.3M | ▲+2.8% Added · +17K sh | Q1 2026 | |
| 11 | American Century Companies Inc | 597K | $27.2M | ▼−15% Reduced · −108K sh | Q1 2026 | |
| 12 | Morgan Stanley | 551K | $25.1M | ▼−4.6% Reduced · −27K sh | Q1 2026 | |
| 13 | Brown Advisory Inc | 512K | $23.3M | ▼−45% Reduced · −413K sh | Q1 2026 | |
| 14 | Arrowstreet Capital, Limited Partnership | 448K | $20.4M | ▲+6.4% Added · +27K sh | Q1 2026 | |
| 15 | Northern Trust Corp | 447K | $20.4M | ▲+18% Added · +67K sh | Q1 2026 | |
| 16 | Charles Schwab Investment Management Inc | 446K | $20.3M | ▼−5.8% Reduced · −28K sh | Q1 2026 | |
| 17 | Hotchkis & Wiley Capital Management LLC | 290K | $13.1M | ▼−3.7% Reduced · −11K sh | Q2 2026 | |
| 18 | Bridgeway Capital Management, LLC | 271K | $12.2M | ▼−14% Reduced · −46K sh | Q2 2026 | |
| 19 | Nuveen, LLC | 254K | $11.6M | ▼−6.1% Reduced · −17K sh | Q1 2026 | |
| 20 | Goldman Sachs Group Inc | 240K | $10.9M | ▼−6.4% Reduced · −16K sh | Q1 2026 | |
| 21 | Vanguard Fiduciary Trust Co | 202K | $9.1M | ▲+7.8% Added · +15K sh | Q2 2026 | |
| 22 | Bank of New York Mellon Corp | 192K | $8.8M | ▼−3.6% Reduced · −7K sh | Q1 2026 | |
| 23 | Qube Research & Technologies Ltd | 179K | $8.2M | ▼−16% Reduced · −34K sh | Q1 2026 | |
| 24 | AQR Capital Management LLC | 173K | $7.9M | ▲+20% Added · +29K sh | Q1 2026 | |
| 25 | Empowered Funds, LLC | 164K | $7.5M | ▲New +164K 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, 3 funds opened a new position in REX and 20 added to an existing one, while 22 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 |
|---|---|---|
| Nvidia CorpNVDA | 106 funds | $326.7B |
| Microsoft CorpMSFT | 106 funds | $200.9B |
| Lam Research CorpLRCX | 104 funds | $41.2B |
| Costco Wholesale CorpCOST | 104 funds | $27.8B |
| Apple IncAAPL | 103 funds | $224.8B |
| Amazon.com IncAMZN | 103 funds | $154.7B |
| Meta Platforms Inc-Class AMETA | 103 funds | $82.8B |
| Tesla IncTSLA | 103 funds | $54.3B |
| Eli Lilly & CoLLY | 102 funds | $66.0B |
| JPMorgan Chase & CoJPM | 102 funds | $45.9B |
| Broadcom IncAVGO | 101 funds | $134.1B |
| Alphabet Inc-CL AGOOGL | 101 funds | $133.9B |
Ranked by how many of REX's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in REX.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 18, 2026 | Rose Stuart A | Executive COB, Director | Sell (S) | 15K | $663K |
| Jun 17, 2026 | Rose Stuart A | Executive COB, Director | Sell (S) | 69K | $3.0M |
| Jun 11, 2026 | Rose Stuart A | Executive COB, Director | Sell (S) | 766 | $34K |
| Jun 10, 2026 | Rose Stuart A | Executive COB, Director | Sell (S) | 1K | $50K |
| Jun 8, 2026 | Rose Stuart A | Executive COB, Director | Sell (S) | 14K | $614K |
| Jun 2, 2026 | Bruggeman Douglas | CFO, VP-Finance, Treasurer | Sell (S) 2 lots, same day | 5K | $248K |
| Apr 2, 2026 | Bruggeman Douglas | CFO, VP-Finance, Treasurer | Sell (S) | 2K | $91K |
| Mar 31, 2026 | Bruggeman Douglas | CFO, VP-Finance, Treasurer | Sell (S) | 5K | $227K |
| May 24, 2024 | Fisher Lee | Director | Sell (S) | 4K | $246K |
| Apr 9, 2024 | Rose Stuart A | Executive COB, Director | Sell (S) | 3K | $153K |
| Apr 8, 2024 | Rose Stuart A | Executive COB, Director | Sell (S) | 5K | $290K |
| Apr 5, 2024 | Rose Stuart A | Executive COB, Director | Sell (S) | 5K | $293K |
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 | 53 | 36 | – |
Insiders Form 4 open-market | 0 | 2 | -$5.0M |
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 REX
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/REX/capital-change-brief"
Use Arkolith's capital_change_brief for REX. 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 REX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.