Orion Group Holdings, Inc.
US ˙ NYSE ˙ US68628V3087

SecurityORN / Orion Group Holdings, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership1,772,172 shares
Ownership 4.60%
Dimensional Fund Advisors Lp ownership in ORN / Orion Group Holdings, Inc.

2025-01-23 - Dimensional Fund Advisors Lp has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 1,772,172 shares of Orion Group Holdings, Inc. (US:ORN). This represents 4.6 percent ownership of the company. In their previous filing dated 2024-02-09 , Dimensional Fund Advisors Lp had reported owning 1,852,316 shares, indicating a decrease of -4.33 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2025-01-23 2025-01-23 13G/A 1,852,316 1,772,172 -4.33 4.60 -19.30
2024-02-09 2024-02-09 13G/A 1,977,680 1,852,316 -6.34 5.70 -8.06
2023-02-10 2023-02-10 13G/A 2,124,131 1,977,680 -6.89 6.20 -8.82
2022-02-08 2022-02-08 13G/A 2,259,659 2,124,131 -6.00 6.80 -8.11
2021-02-12 2021-02-12 13G/A 2,357,292 2,259,659 -4.14 7.40 -7.27
2020-02-12 2020-02-12 13G/A 2,432,909 2,357,292 -3.11 7.98 -5.00
2019-02-08 2019-02-08 13G/A 2,087,504 2,432,909 16.55 8.40 13.51
2018-02-09 2018-02-09 13G/A 1,568,388 2,087,504 33.10 7.40 30.51
2017-02-09 2017-02-09 13G 1,568,388 5.67

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-07 2026-03-31 13F ORION GROUP HLDGS COM 68628V308 1,590,690 -23,371 -1.45 17,338 8.07 0.0008
2026-02-12 2025-12-31 13F ORION GROUP HLDGS COM 68628V308 1,614,061 -70,916 -4.21 16,044 14.44 0.0034
2025-11-12 2025-09-30 13F ORION GROUP HLDGS COM 68628V308 1,684,977 17,390 1.04 14,019 -7.31 0.0030
2025-08-12 2025-06-30 13F ORION GROUP HLDGS COM 68628V308 1,667,587 -56,486 -3.28 15,125 67.76 0.0035
2025-05-13 2025-03-31 13F ORION GROUP HLDGS COM 68628V308 1,724,073 -48,099 -2.71 9,017 -30.59 0.0022
2025-02-13 2024-12-31 13F ORION GROUP HLDGS COM 68628V308 1,772,172 -132,836 -6.97 12,991 18.19 0.0031
2024-11-07 2024-09-30 13F ORION GROUP HLDGS COM 68628V308 1,905,008 22,110 1.17 10,992 -38.62 0.0027
2024-08-09 2024-06-30 13F ORION GROUP HLDGS COM 68628V308 1,882,898 46,079 2.51 17,907 18.89 0.0047
2024-05-10 2024-03-31 13F ORION GROUP HLDGS COM 68628V308 1,836,819 -15,497 -0.84 15,062 64.60 0.0041
2024-02-07 2023-12-31 13F ORION GROUP HLDGS COM 68628V308 1,852,316 127,142 7.37 9,150 -1.04 0.0027
2023-11-09 2023-09-30 13F ORION GROUP HLDGS COM 68628V308 1,725,174 -56,820 -3.19 9,247 84.66 0.0030
2023-08-09 2023-06-30 13F ORION GROUP HLDGS COM 68628V308 1,781,994 -176,771 -9.02 5,007 -1.30 0.0016
2023-05-12 2023-03-31 13F ORION GROUP HLDGS COM 68628V308 1,958,765 -18,915 -0.96 5,073 126,725.00 0.0017
2023-02-09 2022-12-31 13F ORION GROUP HLDGS COM 68628V308 1,977,680 -14,202 -0.71 5 -99.92 0.0014
2022-11-10 2022-09-30 13F ORION GROUP HLDGS COM 68628V308 1,991,882 -27,013 -1.34 5,259 14.28 0.0020
2022-08-12 2022-06-30 13F ORION GROUP HLDGS COM 68628V308 2,018,895 -39,204 -1.90 4,602 -9.84 0.0017
2022-05-13 2022-03-31 13F ORION GROUP HLDGS COM 68628V308 2,058,099 -66,032 -3.11 5,104 -36.26 0.0016
2022-02-09 2021-12-31 13F ORION GROUP HLDGS COM 68628V308 2,124,131 -93,438 -4.21 8,008 -33.62 0.0024
2021-11-12 2021-09-30 13F ORION GROUP HLDGS COM 68628V308 2,217,569 -81,177 -3.53 12,063 -8.74 0.0039
2021-08-12 2021-06-30 13F ORION GROUP HLDGS COM 68628V308 2,298,746 6,232 0.27 13,218 -5.01 0.0042
2021-05-14 2021-03-31 13F ORION GROUP HLDGS COM 68628V308 2,292,514 32,855 1.45 13,915 24.15 0.0046
2021-03-08 2020-12-31 13F/A-2 ORION GROUP HOLDINGS COM 68628V308 2,259,659 -25,602 -1.12 11,208 78.36 0.0040
2021-02-11 2020-12-31 13F ORION GROUP HOLDINGS COM 68628V308 2,259,659 -25,602 11,208 4,047.7339
2020-11-12 2020-09-30 13F ORION GROUP HOLDINGS COM 68628V308 2,285,261 -72,367 -3.07 6,284 -15.12 0.0027
2020-08-13 2020-06-30 13F ORION GROUP HOLDINGS COM 68628V308 2,357,628 -39,510 -1.65 7,403 18.79 0.0033
2020-05-14 2020-03-31 13F ORION GROUP HOLDINGS COM 68628V308 2,397,138 39,846 1.69 6,232 -49.06 0.0032
2020-02-14 2019-12-31 13F ORION GROUP HOLDINGS COM 68628V308 2,357,292 2,362 0.10 12,234 15.45 0.0045
2019-11-12 2019-09-30 13F ORION GROUP HOLDINGS COM 68628V308 2,354,930 -31,491 -1.32 10,597 65.71 0.0041
2019-08-13 2019-06-30 13F ORION GROUP HOLDINGS COM 68628V308 2,386,421 -36,874 -1.52 6,395 -9.62 0.0025
2019-08-12 2019-03-31 13F/A-2 ORION GROUP HOLDINGS COM 68628V308 2,423,295 -9,614 -0.40 7,076 -32.20 0.0028
2019-05-10 2019-03-31 13F ORION GROUP HOLDINGS COM 68628V308 2,423,295 -9,614 7,076
2019-02-26 2018-12-31 13F/A-1 ORION GROUP HOLDINGS COM 68628V308 2,432,909 10,626 0.44 10,437 -42.93 0.0047
2019-02-13 2018-12-31 13F ORION GROUP HOLDINGS COM 68628V308 2,432,909 10,626 10,437
2018-11-13 2018-09-30 13F ORION GROUP HOLDINGS COM 68628V308 2,422,283 71,779 3.05 18,288 -5.80 0.0070
2018-08-10 2018-06-30 13F ORION GROUP HOLDINGS COM 68628V308 2,350,504 126,243 5.68 19,415 32.45 0.0077
2018-05-11 2018-03-31 13F ORION GROUP HOLDINGS COM 68628V308 2,224,261 136,757 6.55 14,658 -10.32 0.0061
2018-02-12 2017-12-31 13F ORION GROUP HOLDINGS COM 68628V308 2,087,504 71,762 3.56 16,345 23.61 0.0068
2017-11-13 2017-09-30 13F ORION GROUP HOLDINGS COM 68628V308 2,015,742 47,370 2.41 13,223 -10.07 0.0058
2017-08-11 2017-06-30 13F ORION GROUP HOLDINGS COM 68628V308 1,968,372 159,616 8.82 14,704 8.83 0.0068
2017-05-12 2017-03-31 13F ORION GROUP HOLDINGS COM 68628V308 1,808,756 240,368 15.33 13,511 -13.42 0.0065
2017-02-09 2016-12-31 13F ORION GROUP HOLDINGS COM 68628V308 1,568,388 194,336 14.14 15,606 65.81 0.0078
2016-11-10 2016-09-30 13F ORION GROUP HOLDINGS COM 68628V308 1,374,052 34,408 2.57 9,412 32.32 0.0051
2016-08-09 2016-06-30 13F ORION GROUP HOLDINGS COM 68628V308 1,339,644 116,846 9.56 7,113 12.30 0.0041
2016-05-13 2016-03-31 13F ORION MARINE GROUP COM 68628V308 1,222,798 29,283 2.45 6,334 27.27 0.0038
2016-02-10 2015-12-31 13F ORION MARINE GROUP COM 68628V308 1,193,515 9,758 0.82 4,977 -29.69 0.0031
2015-11-13 2015-09-30 13F ORION MARINE GROUP COM 68628V308 1,183,757 10,673 0.91 7,079 -16.42 0.0046
2015-08-14 2015-06-30 13F ORION MARINE GROUP COM 68628V308 1,173,084 105,327 9.86 8,470 -10.47 0.0052
2015-05-14 2015-03-31 13F ORION MARINE GROUP COM 68628V308 1,067,757 99,894 10.32 9,460 -11.55 0.0060
2015-02-06 2014-12-31 13F ORION MARINE GROUP COM 68628V308 967,863 54,884 6.01 10,695 17.37 0.0070
2014-11-13 2014-09-30 13F ORION MARINE GROUP COM 68628V308 912,979 52,517 6.10 9,112 -2.22 0.0065
2014-08-08 2014-06-30 13F ORION MARINE GROUP COM 68628V308 860,462 31,906 3.85 9,319 -10.51 0.0065
2014-05-14 2014-03-31 13F ORION MARINE GROUP COM 68628V308 828,556 21,598 2.68 10,414 7.27 0.0078
2014-02-12 2013-12-31 13F ORION MARINE GROUP COM 68628V308 806,958 21,224 2.70 9,708 18.69 0.0076
2013-11-13 2013-09-30 13F ORION MARINE GROUP COM 68628V308 785,734 114,805 17.11 8,179 0.84 0.0071
2013-08-15 2013-06-30 13F ORION MARINE GROUP COM 68628V308 670,929 670,929 8,111 0.0076
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.