Among active 13F managers last quarter, 2 opened and 3 added, while 3 reduced; the largest holder to move was LMR Partners LLP (+17%). No open-market insider trades in the last 180 days.
5 adding vs 3 trimming; no open-market insider net.
22 tracked 13F filers disclose a position in IMSRW as of the latest SEC 13F filings, a combined $28.4M 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 | LMR Partners LLP | 3.3M | $8.7M | ▲+17% Added · +497K sh | Q1 2026 | |
| 2 | Hudson Bay Capital Management LP | 1.3M | $3.4M | ▲+427% Added · +1.1M sh | Q1 2026 | |
| 3 | Peak6 LLC | 1.2M | $4.2M | ▲+4.2% Added · +50K sh | Q2 2026 | |
| 4 | Cantor Fitzgerald, L. P. | 1.1M | $2.8M | ▼−58% Reduced · −1.5M sh | Q1 2026 | |
| 5 | Caption Management, LLC | 865K | $2.2M | ▲+7.3% Added · +59K sh | Q1 2026 | |
| 6 | Aristeia Capital, L.L.C. | 735K | $1.9M | ▲+263% Added · +533K sh | Q1 2026 | |
| 7 | Magnetar Financial LLC | 723K | $2.4M | ▼−7.3% Reduced · −57K sh | Q2 2026 | |
| 8 | Boothbay Fund Management, LLC | 390K | Withheld | ▲New +390K sh | Q1 2026 | |
| 9 | Morgan Stanley | 281K | $727K | ▼−18% Reduced · −62K sh | Q1 2026 | |
| 10 | Linden Advisors LP | 195K | $500K | —Held | Q1 2026 | |
| 11 | Arosa Capital Management LP | 175K | $453K | ▼−36% Reduced · −100K sh | Q1 2026 | |
| 12 | Periscope Capital Inc. | 153K | $418K | —Held | Q2 2026 | |
| 13 | CastleKnight Management LP | 73K | $190K | —Held | Q1 2026 | |
| 14 | Walleye Capital LLC | 53K | $178K | ▼−62% Reduced · −87K sh | Q2 2026 | |
| 15 | Alberta Investment Management Corp | 50K | $169K | —Held | Q2 2026 | |
| 16 | Balyasny Asset Management L.P. | 41K | $105K | ▼−81% Reduced · −173K sh | Q1 2026 | |
| 17 | Stoic Point Capital Management LLC | 13K | $45K | —Held | Q2 2026 | |
| 18 | Clear Street Group Inc. | 10K | $34K | —Held | Q2 2026 | |
| 19 | Advisory Services Network, LLC | 6K | $16K | ▲New +6K sh | Q1 2026 | |
| 20 | Rockefeller Capital Management L.P. | 6K | $16K | ▲New +6K sh | Q1 2026 | |
| 21 | Federation des caisses Desjardins du Quebec | 2K | $5K | ▲New +2K sh | Q1 2026 | |
| 22 | Osaic Holdings, Inc. | 600 | $2K | —Held | 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. 1 value row is withheld because the reported units disagree with same-security peers; share counts are unchanged.
Last quarter, 2 funds opened a new position in IMSRW and 3 added to an existing one, while 3 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 | Combined value |
|---|---|---|
| CANTOR EQUITY PARTNERS-CL ACEPF | 10 funds | $48.6M |
| AMERICAN EXCEPTIONALISM-CL AAEXA | 9 funds | $46.2M |
| D. BORAL ARC ACQUISIT - CL ABCAR | 9 funds | $43.6M |
| BLUE ACQUISITION CORP-RTSBACCR | 9 funds | $2.6M |
| WARNER BROS DISCOVERY INCWBD | 8 funds | $1.1B |
| META PLATFORMS INC-CLASS AMETA | 8 funds | $888.8M |
| MICROSOFT CORPMSFT | 8 funds | $824.7M |
| NORFOLK SOUTHERN CORPNSC | 8 funds | $783.2M |
| MICRON TECHNOLOGY INCMU | 8 funds | $622.3M |
| UNITEDHEALTH GROUP INCUNH | 8 funds | $369.9M |
| AES CORPAES | 8 funds | $244.6M |
| LIBERTY BROADBAND-CLBRDK | 8 funds | $174.2M |
Ranked by how many of IMSRW's institutional holders also hold each name, a cross-fund conviction signal.
No open-market insider transactions on file yet. Grants, gifts, and exercises live on the full insider page.
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
| Source | Buying | Selling | Net |
|---|---|---|---|
13F funds Latest quarterly filings | 5 | 6 | – |
Insiders Form 4 open-market | 0 | 0 | $0 |
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 ~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.
| Class | 13F holders | Value held |
|---|---|---|
| IMSRStock | 85 funds | $103.4M |
| IMSRWthis pageStock | 22 funds | $30.8M |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
No filings captured for this ticker in the live stream yet.
Connected entities for IMSRW
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/IMSRW/capital-change-brief"
Use Arkolith's capital_change_brief for IMSRW. 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 IMSRW. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.