13F reference period
Q3 2026
Security Snapshot
HORNBECK OFFSHORE SERVICES, INC. - Common Stock (HOS) Institutional Ownership
CUSIP: 42330P107
13F Institutional Holders and Ownership History from Q1 2014 to Q3 2026
Institutions Reporting
156
Shares (Excl. Options)
78.31M
Full value: 78,306,853 · shares · 30 Sep 2026Price
$7.69
The headline uses the Q3 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended.
Save this security page for your next review
Watchlists follow companies and investors, across their share classes. Bookmark this page to revisit this specific CUSIP and its quarterly holders. If you create an account from here, we will bring you back after verification.
- Security type / class
- Equity / Common Stock
- Symbol
- HOS on NYSE
- All holders as of 30 Sep 2026
- Q3 2026
- Total 13F shares
- 78,306,853
- Total 13F value
- $601,339,845
- Portfolio coverage rank
- 0%
- Share change
- +10,395,547
- Value change
- +$78,411,112
- Number of holders
- 156
- Shares outstanding
- 184,850,452
- SEC-reported price per share
- $7.38
- Insider filing price
- $7.38
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Filing notes and source
Key facts
- HOS - HORNBECK OFFSHORE SERVICES, INC. - Common Stock is tracked under CUSIP 42330P107.
- 156 institutions reported positions in Q3 2026.
- 5 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 281 to 156 between Q2 2026 and Q3 2026.
- SEC-reported value moved from to
$1.19B
Full value: $1,187,984,682 · USD · 30 Jun 2026.$601.34M
Full value: $601,339,845 · USD · 30 Sep 2026
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 156 institutions filings for Q3 2026.
Security key
42330P107
13F reference period
Q3 2026
13F holders
156
13D/G owners
5
CIK / CUSIP context first
Open Q3 2026 holders
HOS full holder history
HORNBECK OFFSHORE SERVICES, INC. SEC filings
HORNBECK OFFSHORE SERVICES, INC. company facts
HORNBECK OFFSHORE SERVICES, INC. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 42330P107:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
5
Security
HOS
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| ASOF HOS GP, LLC | 24% | $617,384,130 | 61,738,413 | ASOF HOS GP, LLC | 01 Sep 2026 | |||
| WHITEBOX ADVISORS LLC | 15% | $378,736,960 | 37,873,696 | WHITEBOX ADVISORS LLC | 01 Sep 2026 | |||
| BlackRock, Inc. | 12% | -18% | $163,472,497 | +$484,778 | 21,257,802 | +0.3% | BlackRock, Inc. | 30 Sep 2026 |
| MERCED CAPITAL, L.P. | 5.3% | $117,331,060 | 11,733,106 | Merced Capital, L.P. | 01 Sep 2026 | |||
| DIMENSIONAL FUND ADVISORS LP | 6% | $58,109,287 | 8,858,123 | Dimensional Fund Advisors LP | 30 Sep 2025 |
As of 30 Sep 2026,
156
institutional investors reported holding
shares of
HORNBECK OFFSHORE SERVICES, INC. - Common Stock (HOS).
This represents
42%
of the company’s total
outstanding shares.
78.31M
Full value: 78,306,853 · shares · 30 Sep 2026184.85M
Full value: 184,850,452 · shares · Stored outstanding share count13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
38%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| DIMENSIONAL FUND ADVISORS LP | 5% | 9,327,394 | +2.6% | 0.01% | $71,727,979 |
| Invesco Ltd. | 4% | 7,446,014 | +5.8% | 0% | $57,259,848 |
| STATE STREET CORP | 3.6% | 6,738,881 | -6.1% | 0% | $51,821,995 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3.4% | 6,356,713 | -0.94% | 0% | $48,883,123 |
| AMERICAN CENTURY COMPANIES INC | 3.4% | 6,297,729 | +16% | 0.02% | $48,429,536 |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.3% | 6,151,528 | -0.44% | 0% | $47,305,250 |
| MORGAN STANLEY | 2.3% | 4,192,541 | +100% | 0% | $32,240,659 |
| VALUEWORKS LLC | 2% | 3,715,510 | +677% | 6.2% | $28,572,272 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.9% | 3,528,740 | -0.77% | 0% | $27,140,608 |
| VAN ECK ASSOCIATES CORP | 1.6% | 2,914,789 | +6.9% | 0.01% | $22,414,728 |
| Qube Research & Technologies Ltd | 1.2% | 2,290,283 | +62% | 0.02% | $17,612,276 |
| Assenagon Asset Management S.A. | 1.1% | 1,952,135 | +401% | 0.02% | $15,011,918 |
| PANAGORA ASSET MANAGEMENT INC | 0.81% | 1,493,254 | +21% | 0.03% | $11,483,123 |
| RENAISSANCE TECHNOLOGIES LLC | 0.56% | 1,027,327 | +14% | 0.01% | $7,900,145 |
| Edgestream Partners, L.P. | 0.52% | 960,345 | +280% | 0.2% | $7,385,053 |
| VANGUARD FIDUCIARY TRUST CO | 0.5% | 931,665 | +0.11% | 0% | $7,164,504 |
| Empowered Funds, LLC | 0.47% | 868,904 | +32% | 0.03% | $6,681,872 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 0.45% | 839,761 | -26% | 0% | $6,457,762 |
| Bastion Asset Management Inc. | 0.38% | 694,145 | +46% | 2.3% | $5,357,285 |
| CSM Advisors, LLC | 0.38% | 693,973 | +13% | 0.12% | $5,340,000 |
| Y-Intercept (Hong Kong) Ltd | 0.31% | 579,578 | +288% | 0.1% | $4,456,955 |
| FIRST TRUST ADVISORS LP | 0.3% | 548,473 | +39% | 0% | $4,217,757 |
| KENNEDY CAPITAL MANAGEMENT LLC | 0.3% | 546,310 | -3% | 0.08% | $4,201,124 |
| ROYCE & ASSOCIATES LP | 0.26% | 481,474 | +142% | 0.03% | $3,702,535 |
| Simcoe Capital LLC | 0.26% | 476,132 | +8.9% | 2.5% | $3,661,455 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
51
Headline period
Q3 2026
Rows shown
1-25 of 51
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q3 | 78,306,853 | $601,339,845 | +$78,411,112 | $7.69 | 156 |
| 2026 Q2 | 135,876,548 | $1,187,984,682 | +$41,813,222 | $8.74 | 281 |
| 2026 Q1 | 131,107,782 | $1,295,694,881 | +$46,820,953 | $9.89 | 273 |
| 2025 Q4 | 127,760,899 | $801,201,227 | +$2,673,885 | $6.27 | 263 |
| 2025 Q3 | 126,442,509 | $829,546,501 | -$27,222,058 | $6.56 | 242 |
| 2025 Q2 | 131,418,922 | $820,081,819 | -$23,556,653 | $6.24 | 250 |
| 2025 Q1 | 134,971,151 | $1,121,221,007 | -$51,027,829 | $8.31 | 254 |
| 2024 Q4 | 140,350,829 | $1,308,035,515 | +$42,148,338 | $9.32 | 239 |
| 2024 Q3 | 134,897,787 | $1,492,859,033 | -$32,619,792 | $11.10 | 235 |
| 2024 Q2 | 137,750,112 | $1,644,737,142 | +$33,011,760 | $11.94 | 238 |
| 2024 Q1 | 133,207,636 | $1,444,096,939 | -$53,935,366 | $10.84 | 219 |
| 2023 Q4 | 139,345,088 | $1,432,280,045 | -$63,032,052 | $10.28 | 237 |
| 2023 Q3 | 143,721,037 | $1,605,000,871 | +$30,749,161 | $11.17 | 248 |
| 2023 Q2 | 141,403,933 | $1,043,642,225 | -$31,219,369 | $7.38 | 209 |
| 2023 Q1 | 145,324,709 | $1,124,780,833 | +$48,377,707 | $7.74 | 225 |
| 2022 Q4 | 141,761,617 | $1,045,858,115 | +$42,440,705 | $7.38 | 204 |
| 2022 Q3 | 135,688,189 | $523,789,995 | -$11,130,214 | $3.86 | 187 |
| 2022 Q2 | 137,745,230 | $427,003,604 | +$7,772,698 | $3.10 | 183 |
| 2022 Q1 | 135,049,001 | $645,934,269 | +$21,452,677 | $4.78 | 185 |
| 2021 Q4 | 131,448,420 | $410,207,877 | -$16,380,234 | $3.12 | 179 |
| 2021 Q3 | 136,378,413 | $529,195,806 | -$17,733,817 | $3.88 | 170 |
| 2021 Q2 | 140,083,916 | $799,699,541 | +$17,791,465 | $5.71 | 171 |
| 2021 Q1 | 137,456,866 | $694,472,851 | +$11,343,636 | $5.05 | 174 |
| 2020 Q4 | 135,660,866 | $569,841,834 | +$35,458,220 | $4.20 | 168 |
| 2020 Q3 | 129,126,044 | $311,282,280 | +$5,672,888 | $2.41 | 164 |