149 tracked 13F filers disclose a position in OSG as of the latest SEC 13F filings, a combined $168.3M 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 | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $18.2M | 3.9M | ▼−13% Reduced · −571K sh | Q1 2026 | |
| 2 | Western Standard LLC | $14.0M | 2.2M | —Held | Q2 2026 | |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $9.0M | 1.9M | →First observed position No prior filed position | Q1 2026 | |
| 4 | PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C. | $10.3M | 1.6M | ▲+3.5% Added · +55K sh | Q2 2026 | |
| 5 | GENDELL JEFFREY L | $6.6M | 1.4M | ▼−9.9% Reduced · −156K sh | Q1 2026 | |
| 6 | THIRD AVENUE MANAGEMENT LLC | $8.4M | 1.3M | ▲~0% Added · +668 sh | Q2 2026 | |
| 7 | DIMENSIONAL FUND ADVISORS LP | $6.1M | 1.3M | ▼−22% Reduced · −375K sh | Q1 2026 | |
| 8 | Bain Capital Credit, LP | $6.9M | 1.1M | —Held | Q2 2026 | |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | $6.9M | 1.1M | ▲+8.2% Added · +84K sh | Q2 2026 | |
| 10 | MARSHALL WACE, LLP | $5.0M | 1.1M | ▲+42% Added · +317K sh | Q1 2026 | |
| 11 | STATE STREET CORP | $5.6M | 899K | ▼−4.5% Reduced · −43K sh | Q2 2026 | |
| 12 | JACOBS LEVY EQUITY MANAGEMENT, INC | $4.1M | 884K | ▲+273% Added · +647K sh | Q1 2026 | |
| 13 | Nuveen, LLC | $3.7M | 800K | ▼−1.2% Reduced · −10K sh | Q1 2026 | |
| 14 | JANE STREET GROUP, LLC | $3.6M | 764K | ▼−50% Reduced · −756K sh | Q1 2026 | |
| 15 | Caption Management, LLC | $3.0M | 643K | ▼−40% Reduced · −428K sh | Q1 2026 | |
| 16 | ZACKS INVESTMENT MANAGEMENT | $3.7M | 590K | ▲New +590K sh | Q2 2026 | |
| 17 | Bracebridge Capital, LLC | $3.6M | 579K | —Held | Q2 2026 | |
| 18 | RIHO Partners, LLC | $3.5M | 555K | ▲+1.5% Added · +8K sh | Q2 2026 | |
| 19 | ESSEX INVESTMENT MANAGEMENT CO LLC | $3.4M | 539K | ▲+29% Added · +121K sh | Q2 2026 | |
| 20 | CITADEL ADVISORS LLC | $2.0M | 432K | ▲+50% Added · +145K sh | Q1 2026 | |
| 21 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1.8M | 390K | ▼−26% Reduced · −136K sh | Q1 2026 | |
| 22 | GOLDMAN SACHS GROUP INC | $1.6M | 346K | ▼−56% Reduced · −434K sh | Q1 2026 | |
| 23 | Brooklyn Investment Group | $1.5M | 325K | ▲New +325K sh | Q1 2026 | |
| 24 | NORTHERN TRUST CORP | $1.5M | 322K | ▼−0.2% Reduced · −798 sh | Q1 2026 | |
| 25 | IPG Investment Advisors LLC | $1.9M | 304K | ▼−6.7% Reduced · −22K sh | Q2 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, 13 funds opened a new position in OSG and 20 added to an existing one, while 14 reduced and 0 exited entirely — 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 |
|---|---|---|
| MICROSOFT CORPMSFT | 69 funds | $123.5B |
| NVIDIA CORPNVDA | 68 funds | $182.1B |
| AMAZON.COM INCAMZN | 68 funds | $88.1B |
| MASTERCARD INC - AMA | 66 funds | $25.8B |
| MICRON TECHNOLOGY INCMU | 66 funds | $15.2B |
| BROADCOM INCAVGO | 65 funds | $75.5B |
| ALPHABET INC-CL AGOOGL | 65 funds | $69.5B |
| META PLATFORMS INC-CLASS AMETA | 65 funds | $54.7B |
| ELI LILLY & COLLY | 65 funds | $36.3B |
| LAM RESEARCH CORPLRCX | 65 funds | $13.6B |
| AMPHENOL CORP-CL AAPH | 65 funds | $11.0B |
| APPLE INCAAPL | 64 funds | $137.3B |
Ranked by how many of OSG's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jan 2, 2026 | LeBlanc Claude | Chief Executive Officer, Director | Buy (P) | 12K | $91K |
| May 15, 2024 | Norton Samuel H | President and CEO, Director | Sell (S) | 50K | $337K |
| Apr 16, 2024 | Norton Samuel H | President and CEO, Director | Sell (S) | 30K | $176K |
| Apr 15, 2024 | Norton Samuel H | President and CEO, Director | Sell (S) | 20K | $122K |
| Mar 15, 2024 | Norton Samuel H | President and CEO, Director | Sell (S) | 50K | $303K |
| Feb 15, 2024 | Norton Samuel H | President and CEO, Director | Sell (S) | 50K | $314K |
| Jan 16, 2024 | Norton Samuel H | President and CEO, Director | Sell (S) | 50K | $274K |
| Dec 15, 2023 | Norton Samuel H | President and CEO, Director | Sell (S) | 50K | $239K |
| Dec 14, 2023 | Luria Elaine Goodman | Director | Buy (P) | 20K | $96K |
| Dec 13, 2023 | Luria Elaine Goodman | Director | Buy (P) | 18K | $85K |
| Dec 13, 2023 | Luria Elaine Goodman | Director | Buy (P) | 2K | $10K |
| Nov 15, 2023 | Norton Samuel H | President and CEO, Director | Sell (S) | 50K | $248K |
Connected entities for OSG
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/OSG/capital-change-brief"
Use Arkolith's capital_change_brief for OSG. 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 OSG. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.