HOS · Hornbeck Offshore Services, Inc. · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Superinvestors Holding HOS
All superinvestors →Holder Concentration
Across 286 13F filersWho Holds HOS
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 285 filers, like-for-like change +3.8%; actively managed books +2.7%; index-like books +5.4%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 39.6% | 145 | +3.8% |
| Exempt adviser | 1.3% | 4 | +49.2% |
| Adviser | 6.3% | 5 | +1.0% |
| Bank | 8.6% | 16 | +8.0% |
| Insurer | 4.7% | 2 | +30.3% |
| Broker-dealer | 0.0% | 2 | +34.2% |
| Benefit plan | 0.4% | 6 | -23.1% |
| Non-US | 3.1% | 10 | -22.8% |
| Holding company | 24.0% | 10 | +4.7% |
| Unknown | 11.9% | 85 | -0.4% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 40.2% | 35 | +5.4% |
| Systematic-like | 3.5% | 23 | +12.1% |
| Concentrated | 0.9% | 42 | -57.5% |
| Diversified active | 55.3% | 185 | +4.6% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 58.8% | 156 | +3.2% |
| Medium turnover | 25.4% | 65 | +7.1% |
| High turnover | 4.7% | 39 | +0.6% |
| Unknown | 11.2% | 25 | +1.0% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 11.9% | 34 | -1.9% |
| Medium horizon | 19.6% | 47 | -0.3% |
| Long horizon | 65.0% | 187 | +3.5% |
| Unknown | 3.4% | 17 | +99.0% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 2.1% | 57 | -36.0% |
| $1B to $10B | 6.9% | 71 | +36.5% |
| $10B to $100B | 14.2% | 86 | +14.2% |
| $100B or more | 76.8% | 71 | +1.6% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 0.7% | 65 | +13.2% |
| Pooled investment vehicles | 5.0% | 28 | +33.7% |
| Registered funds and BDCs | 27.8% | 23 | +2.8% |
| Pension and profit sharing plans | 0.1% | 2 | -13.7% |
| Insurance companies | 0.2% | 3 | +4.6% |
| Charitable organizations | 0.0% | 1 | -100.0% |
| Governments and sovereign funds | 1.8% | 5 | +1.2% |
| Other investment advisers | 0.0% | 4 | +12.5% |
| Other | 0.1% | 1 | -1.5% |
| Diversified | 3.9% | 13 | +8.3% |
| Corporations | 0.0% | 0 | — |
| Unknown | 60.4% | 140 | +3.7% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 10.9% | 41 | +8.6% |
| Private equity funds | 0.4% | 8 | +25.4% |
| Venture capital funds | 0.0% | 1 | -42.3% |
| Real estate funds | 0.1% | 5 | -47.0% |
| Liquidity funds | 0.0% | 1 | 0.0% |
| Securitized asset funds | 0.3% | 1 | -8.3% |
| Other private funds | 8.9% | 12 | +5.9% |
| Mixed private funds | 0.1% | 1 | +11.3% |
| Private funds, type not stated | 2.5% | 5 | -2.3% |
| No private funds | 17.7% | 74 | +3.3% |
| Unknown | 59.1% | 136 | +3.1% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 91.7% | 235 | +4.1% |
| Outside the US | 8.3% | 50 | +0.6% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 2 holders with no observed 2026-03-31 13F and 3 holders with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.
Conviction and Crowding
285 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net sellers of $12,478,864 (0 buying, 1 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 24.4% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies HOS's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | TDW Tidewater Inc | 6 |
| 2 | CSIQ Canadian Solar Inc. | 3 |
| 3 | AMRC Ameresco, Inc. | 3 |
| 4 | ITRI Itron, Inc. | 4 |
| 5 | AEO American Eagle Outfitters Inc | 3 |
| 6 | SBLK Star Bulk Carriers Corp. | 3 |
| 7 | OII Oceaneering International Inc | 3 |
| 8 | VAL Valaris Ltd | 4 |
| 9 | NE Noble Corp plc | 3 |
| 10 | WTTR Select Water Solutions, Inc. | 3 |
Shareholder Targets
13F filers that own its peers but not HOS, quarter ended Jun 30, 2026Found through its holder-overlap peers: TDW, CSIQ, AMRC, ITRI, AEO, SBLK, OII, VAL, NE, WTTR, LYFT, ORA, CHRD, ENPH, CART, OC, AR, HAL, EXE, SU. 2,065 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | Elliott Investment Management L.P. Registered adviser, Concentrated | $1,581,090,720 1 held | SU |
| 2 | FIL Ltd Non-US, Diversified active | $1,552,904,862 5 held | SU, VAL, EXE |
| 3 | Dodge & Cox Registered adviser, Diversified active | $1,361,676,618 1 held | SU |
| 4 | SC US (TTGP), LTD. Unknown, Concentrated | $1,322,409,027 1 held | CART |
| 5 | D1 Capital Partners L.P. Registered adviser, Concentrated | $1,068,425,997 1 held | CART |
| 6 | TD Asset Management Inc Unknown, Diversified active | $1,063,497,880 6 held | SU, CART, HAL |
| 7 | 1832 Asset Management L.P. Non-US, Diversified active | $925,289,599 2 held | SU, EXE |
| 8 | LSV ASSET MANAGEMENT Registered adviser, Diversified active | $901,374,345 7 held | HAL, OC, CART |
| 9 | Capital Research Global Investors Adviser, Diversified active | $899,570,630 2 held | EXE, HAL |
| 10 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ Registered adviser, Diversified active | $889,932,983 7 held | SU, EXE, AR |
Fund Ownership of HOS by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 29.80% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 4.81% | 7,091,891 |
| Index ETFs | 24.99% | 36,833,449 |
| Active ETFs | 3.62% | 5,334,964 |
| Active funds | 12.60% | 18,569,240 |
| Unclassified | 3.87% | 5,698,065 |
| All registered funds | 49.89% | 73,527,609 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. Holding company | $198,669,625 | 16.51% | 22,731,079 | Shares | 2026-08-07 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $79,455,407 | 6.60% | 9,091,008 | Shares | 2026-08-11 | |
| Mega STATE STREET CORP Bank | $62,716,422 | 5.21% | 7,175,792 | Shares | 2026-09-22 | |
| Mega Invesco Ltd. Adviser | $61,488,816 | 5.11% | 7,035,334 | Shares | 2026-08-14 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $56,082,491 | 4.66% | 6,416,761 | Shares | 2026-08-13 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $53,999,277 | 4.49% | 6,178,407 | Shares | 2026-08-13 | |
| Mega AMERICAN CENTURY COMPANIES INC | $47,620,536 | 3.96% | 5,448,574 | Shares | 2026-08-12 | |
| Mega PRINCIPAL FINANCIAL GROUP INC Insurer | $37,750,060 | 3.14% | 4,319,229 | Shares | 2026-08-04 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $32,040,883 | 2.66% | 3,666,005 | Shares | 2026-08-14 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $31,080,636 | 2.58% | 3,556,137 | Shares | 2026-08-12 | |
| Mega WELLINGTON MANAGEMENT GROUP LLP Holding company | $29,790,760 | 2.48% | 3,408,554 | Shares | 2026-08-14 | |
| Mid SYSTEMATIC FINANCIAL MANAGEMENT LP Registered adviser | $27,870,093 | 2.32% | 3,188,798 | Shares | 2026-08-14 | |
| Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. Non-US | $26,263,857 | 2.18% | 3,005,018 | Shares | 2026-08-13 | |
| Mega VAN ECK ASSOCIATES CORP Registered adviser | $23,821,507 | 1.98% | 2,725,573 | Shares | 2026-08-14 | |
| Mega Boston Partners Registered adviser | $21,735,968 | 1.81% | 2,486,953 | Shares | 2026-08-04 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $21,708,473 | 1.80% | 2,483,807 | Shares | 2026-08-14 | |
| Mega MORGAN STANLEY Holding company | $18,358,051 | 1.53% | 2,100,464 | Shares | 2026-08-13 | |
| Large PRUDENTIAL FINANCIAL INC Insurer | $18,256,846 | 1.52% | 2,088,884 | Shares | 2026-08-12 | |
| Mega NORTHERN TRUST CORP Bank | $15,584,127 | 1.30% | 1,783,081 | Shares | 2026-08-13 | |
| Large PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO | $15,127,323 | 1.26% | 1,730,815 | Shares | 2026-08-11 | |
| Large Assenagon Asset Management S.A. | $15,011,918 | 1.25% | 1,952,135 | Shares | 2026-10-15 | |
| Mega Qube Research & Technologies Ltd Exempt adviser | $12,355,886 | 1.03% | 1,413,717 | Shares | 2026-08-14 | |
| Large PANAGORA ASSET MANAGEMENT INC Registered adviser | $10,817,375 | 0.90% | 1,237,686 | Shares | 2026-08-06 | |
| Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Registered adviser | $9,956,739 | 0.83% | 1,139,215 | Shares | 2026-08-13 | |
| Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC Registered adviser | $9,253,265 | 0.77% | 1,058,726 | Shares | 2026-08-14 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $9,049,824 | 0.75% | 1,035,449 | Shares | 2026-08-14 | |
| Large HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC Registered adviser | $8,788,882 | 0.73% | 1,005,593 | Shares | 2026-08-14 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $8,133,758 | 0.68% | 930,636 | Shares | 2026-08-13 | |
| Large RENAISSANCE TECHNOLOGIES LLC Registered adviser | $7,884,589 | 0.66% | 902,127 | Shares | 2026-08-13 | |
| Mid Hillsdale Investment Management Inc. Registered adviser | $7,857,260 | 0.65% | 899,000 | Shares | 2026-08-12 | |
| Mega Jupiter Topco LLC | $7,649,265 | 0.64% | 875,202 | Shares | 2026-08-14 | |
| Mega Bank of New York Mellon Corp Bank | $7,368,193 | 0.61% | 843,043 | Shares | 2026-08-06 | |
| Large TUDOR INVESTMENT CORP ET AL Registered adviser | $5,857,958 | 0.49% | 670,247 | Shares | 2026-08-14 | |
| Large Empowered Funds, LLC Registered adviser | $5,766,826 | 0.48% | 659,820 | Shares | 2026-08-17 | |
| Mid CSM Advisors, LLC | $5,375,668 | 0.45% | 615,065 | Shares | 2026-08-14 | |
| Large Pacer Advisors, Inc. | $5,341,800 | 0.44% | 611,190 | Shares | 2026-08-13 | |
| Mega UBS Group AG Bank | $5,186,105 | 0.43% | 593,376 | Shares | 2026-08-13 | |
| Mid KENNEDY CAPITAL MANAGEMENT LLC Registered adviser | $4,920,051 | 0.41% | 562,935 | Shares | 2026-08-14 | |
| Large Man Group plc | $4,883,177 | 0.41% | 558,716 | Shares | 2026-08-14 | |
| Mega AMERIPRISE FINANCIAL INC Adviser | $4,560,032 | 0.38% | 521,743 | Shares | 2026-08-14 | |
| Mid Y-Intercept (Hong Kong) Ltd Exempt adviser | $4,456,954 | 0.37% | 579,578 | Shares | 2026-10-16 | |
| Small Tensile Capital Management LP Adviser | $4,285,020 | 0.36% | 490,277 | Shares | 2026-08-14 | |
| Large First Eagle Investment Management, LLC Registered adviser | $4,224,548 | 0.35% | 483,358 | Shares | 2026-08-24 | |
| Small VALUEWORKS LLC Registered adviser | $4,181,784 | 0.35% | 478,465 | Shares | 2026-08-17 | |
| Small Bastion Asset Management Inc. | $4,145,530 | 0.34% | 474,317 | Shares | 2026-08-10 | |
| Large Public Sector Pension Investment Board Non-US | $4,113,437 | 0.34% | 470,645 | Shares | 2026-08-13 | |
| Mega FRANKLIN RESOURCES INC Adviser | $4,040,037 | 0.34% | 462,247 | Shares | 2026-08-13 | |
| Mega Russell Investments Group, Ltd. | $4,010,165 | 0.33% | 458,829 | Shares | 2026-08-06 | |
| Mid ALGERT GLOBAL LLC Registered adviser | $3,915,520 | 0.33% | 448,000 | Shares | 2026-08-13 | |
| Mega BNP PARIBAS ARBITRAGE, SA Non-US | $3,910,310 | 0.33% | 447,404 | Shares | 2026-08-13 | |
| Small Simcoe Capital LLC Registered adviser | $3,821,984 | 0.32% | 437,298 | Shares | 2026-08-06 | |
| Mega Nuveen, LLC | $3,685,429 | 0.31% | 421,674 | Shares | 2026-08-11 | |
| Mega FIRST TRUST ADVISORS LP Registered adviser | $3,453,855 | 0.29% | 395,178 | Shares | 2026-08-11 | |
| Mega JPMORGAN CHASE & CO Bank | $3,305,841 | 0.27% | 378,243 | Shares | 2026-08-12 | |
| Mega FMR LLC Holding company | $3,145,516 | 0.26% | 359,899 | Shares | 2026-08-13 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser | $3,110,387 | 0.26% | 355,880 | Shares | 2026-08-13 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $3,088,375 | 0.26% | 353,361 | Shares | 2026-08-12 | |
| Large Connor, Clark & Lunn Investment Management Ltd. Registered adviser | $2,993,581 | 0.25% | 342,515 | Shares | 2026-08-13 | |
| Mega Legal & General Group Plc | $2,778,174 | 0.23% | 317,869 | Shares | 2026-08-14 | |
| Mega Swiss National Bank | $2,454,192 | 0.20% | 280,800 | Shares | 2026-08-11 | |
| Mega VICTORY CAPITAL MANAGEMENT INC Registered adviser | $2,336,656 | 0.19% | 267,352 | Shares | 2026-08-07 | |
| Mid Guinness Asset Management LTD Registered adviser | $2,239,747 | 0.19% | 256,264 | Shares | 2026-07-29 | |
| Large STATE OF WISCONSIN INVESTMENT BOARD Benefit plan | $2,237,641 | 0.19% | 256,023 | Shares | 2026-08-14 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser | $2,217,661 | 0.18% | 253,737 | Shares | 2026-08-14 | |
| Mid Edgestream Partners, L.P. | $2,211,018 | 0.18% | 252,977 | Shares | 2026-08-11 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $2,106,497 | 0.18% | 241,018 | Shares | 2026-08-14 | |
| Small CoreCommodity Management, LLC Registered adviser | $2,092,557 | 0.17% | 239,423 | Shares | 2026-08-14 | |
| Mega VOYA INVESTMENT MANAGEMENT LLC Registered adviser | $1,897,104 | 0.16% | 217,060 | Shares | 2026-08-12 | |
| Mid Glenorchy Capital Ltd Registered adviser | $1,835,994 | 0.15% | 210,068 | Shares | 2026-07-29 | |
| Large ROYCE & ASSOCIATES LP Registered adviser | $1,738,578 | 0.14% | 198,922 | Shares | 2026-08-14 | |
| Large INTECH INVESTMENT MANAGEMENT LLC Registered adviser | $1,731,708 | 0.14% | 198,136 | Shares | 2026-08-10 | |
| Mega SEI INVESTMENTS CO Holding company | $1,693,558 | 0.14% | 193,771 | Shares | 2026-08-14 | |
| Large Gotham Asset Management, LLC Registered adviser | $1,623,830 | 0.13% | 185,793 | Shares | 2026-08-14 | |
| Large Orion Porfolio Solutions, LLC | $1,619,434 | 0.13% | 185,290 | Shares | 2026-08-14 | |
| Mega BARCLAYS PLC Bank | $1,530,041 | 0.13% | 175,062 | Shares | 2026-08-14 | |
| Mega CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Benefit plan | $1,414,105 | 0.12% | 161,797 | Shares | 2026-08-24 | |
| Mid CLOUGH CAPITAL PARTNERS L P Registered adviser | $1,383,856 | 0.12% | 158,336 | Shares | 2026-08-14 | |
| Mid XTX Topco Ltd | $1,317,161 | 0.11% | 150,705 | Shares | 2026-08-14 | |
| Mid Graham Capital Management, L.P. Registered adviser | $1,316,034 | 0.11% | 150,576 | Shares | 2026-08-14 | |
| Mega DEUTSCHE BANK AG\ Non-US | $1,312,266 | 0.11% | 150,145 | Shares | 2026-08-07 | |
| Mega D. E. Shaw & Co., Inc. | $1,290,198 | 0.11% | 147,620 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $1,281,310 | 0.11% | 146,603 | Shares | 2026-09-02 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $1,278,924 | 0.11% | 146,330 | Shares | 2026-08-14 | |
| Mid Quantbot Technologies LP Registered adviser | $1,207,728 | 0.10% | 138,184 | Shares | 2026-08-12 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1,206,994 | 0.10% | 138,100 | Call | 2026-08-14 | |
| Large STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM Benefit plan | $1,202,772 | 0.10% | 137,617 | Shares | 2026-08-10 | |
| Large Universal- Beteiligungs- und Servicegesellschaft mbH | $1,181,245 | 0.10% | 135,154 | Shares | 2026-08-06 | |
| Mid OP Asset Management Ltd | $1,154,921 | 0.10% | 132,142 | Shares | 2026-07-28 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $1,146,294 | 0.10% | 131,155 | Shares | 2026-08-14 | |
| Large Brevan Howard Capital Management LP Exempt adviser | $1,139,346 | 0.09% | 130,360 | Shares | 2026-08-14 | |
| Mega CITIGROUP INC Bank | $1,135,438 | 0.09% | 129,913 | Shares | 2026-08-03 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $1,110,841 | 0.09% | 127,099 | Shares | 2026-08-14 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $1,109,741 | 0.09% | 126,973 | Shares | 2026-08-14 | |
| Small Nierenberg Investment Management Company, LLC Registered adviser | $1,087,693 | 0.09% | 124,450 | Shares | 2026-08-11 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1,084,502 | 0.09% | 124,085 | Shares | 2026-08-14 | |
| Mega Amundi Holding company | $1,080,674 | 0.09% | 123,647 | Shares | 2026-08-11 | |
| Large Schonfeld Strategic Advisors LLC Registered adviser | $1,075,159 | 0.09% | 123,016 | Shares | 2026-08-14 | |
| Mega JANE STREET GROUP, LLC | $998,982 | 0.08% | 114,300 | Call | 2026-08-14 | |
| Large CANADA LIFE ASSURANCE Co | $973,469 | 0.08% | 111,381 | Shares | 2026-08-13 | |
| Large GUGGENHEIM CAPITAL LLC | $951,462 | 0.08% | 108,863 | Shares | 2026-08-12 |
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