Primoris Services Corporation
US ˙ NYSE ˙ US74164F1030

SecurityPRIM / Primoris Services Corporation
InstitutionUBS Group AG
Latest Disclosed Ownership595,574 shares
Latest Disclosed Value $ 85,190,905
UBS Group AG ownership in PRIM / Primoris Services Corporation

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 595,574 shares of Primoris Services Corporation (US:PRIM) valued at $85,190,905 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 638,876 shares of Primoris Services Corporation. This represents a change in shares of -6.78% during the quarter. The current value of the position is $75,232,908 USD.

UBS Group AG has a history of taking positions in derivatives of the underlying security (PRIM) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

PRIM / Primoris Services Corporation Historical Put/Call Ratio
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)
2026-05-05 2026-03-31 13F PRIMORIS SVCS COM 74164F103 595,574 -43,302 -6.78 85,191 7.41 0.0024
2026-01-29 2025-12-31 13F PRIMORIS SVCS COM 74164F103 638,876 15,112 2.42 79,310 -7.41 0.0129
2025-11-13 2025-09-30 13F PRIMORIS SVCS COM 74164F103 623,764 66,979 12.03 85,662 97.40 0.0134
2025-08-14 2025-06-30 13F PRIMORIS SVCS COM 74164F103 556,785 -33,760 -5.72 43,396 28.00 0.0075
2025-05-13 2025-03-31 13F PRIMORIS SVCS COM 74164F103 590,545 148,433 33.57 33,903 0.37 0.0062
2025-02-14 2024-12-31 13F PRIMORIS SVCS COM 74164F103 442,112 75,043 20.44 33,777 58.44 0.0062
2024-11-14 2024-09-30 13F PRIMORIS SVCS COM 74164F103 367,069 20,500 5.92 21,319 23.30 0.0046
2024-08-14 2024-06-30 13F PRIMORIS SVCS COM 74164F103 346,569 273,349 373.33 17,290 454.88 0.0043
2024-05-13 2024-03-31 13F PRIMORIS SVCS COM 74164F103 73,220 -25,089 -25.52 3,117 -4.53 0.0008
2024-02-09 2023-12-31 13F PRIMORIS SVCS COM 74164F103 98,309 35,331 56.10 3,265 58.37 0.0010
2023-11-09 2023-09-30 13F PRIMORIS SVCS COM 74164F103 62,978 23,718 60.41 2,061 72.32 0.0007
2023-08-11 2023-06-30 13F PRIMORIS SVCS COM 74164F103 39,260 12,384 46.08 1,196 80.66 0.0004
2023-05-12 2023-03-31 13F PRIMORIS SVCS COM 74164F103 26,876 4,044 17.71 663 32.40 0.0002
2023-02-08 2022-12-31 13F PRIMORIS SVCS COM 74164F103 22,832 16,810 279.14 501 410.20 0.0002
2022-11-10 2022-09-30 13F PRIMORIS SVCS COM 74164F103 6,022 71 1.19 98 -24.03 0.0000
2022-08-10 2022-06-30 13F PRIMORIS SVCS COM 74164F103 5,951 -5,859 -49.61 129 -54.26 0.0001
2022-05-16 2022-03-31 13F PRIMORIS SVCS COM 74164F103 11,810 -1,841 -13.49 282 -13.76 0.0001
2022-02-14 2021-12-31 13F PRIMORIS SVCS COM 74164F103 13,651 9,622 238.82 327 230.30 0.0001
2021-11-15 2021-09-30 13F PRIMORIS SVCS COM 74164F103 4,029 1,260 45.50 99 20.73 0.0000
2021-08-13 2021-06-30 13F PRIMORIS SVCS COM 74164F103 2,769 -16,272 -85.46 82 -87.00 0.0000
2021-05-12 2021-03-31 13F PRIMORIS SVCS COM 74164F103 19,041 4,327 29.41 631 55.04 0.0002
2021-02-11 2020-12-31 13F PRIMORIS SVCS COM 74164F103 14,714 4,277 40.98 407 116.49 0.0001
2020-11-12 2020-09-30 13F PRIMORIS SVCS COM 74164F103 10,437 -12,759 -55.01 188 -54.37 0.0001
2020-07-31 2020-06-30 13F PRIMORIS SVCS COM 74164F103 23,196 -4,357 -15.81 412 -5.94 0.0002
2020-05-01 2020-03-31 13F PRIMORIS SVCS COM 74164F103 27,553 -26,743 -49.25 438 -63.71 0.0002
2020-02-14 2019-12-31 13F PRIMORIS SVCS COM 74164F103 54,296 30,542 128.58 1,207 159.01 0.0004
2019-11-14 2019-09-30 13F PRIMORIS SVCS COM 74164F103 23,754 17,564 283.75 466 261.24 0.0002
2019-08-14 2019-06-30 13F PRIMORIS SVCS COM 74164F103 6,190 -79,125 -92.74 129 -92.69 0.0000
2019-05-14 2019-03-31 13F PRIMORIS SVCS COM 74164F103 85,315 2,560 3.09 1,764 11.43 0.0007
2019-02-14 2018-12-31 13F PRIMORIS SVCS COM 74164F103 82,755 13,018 18.67 1,583 -8.55 0.0007
2018-11-14 2018-09-30 13F PRIMORIS SVCS COM 74164F103 69,737 27,303 64.34 1,731 49.87 0.0007
2018-08-14 2018-06-30 13F PRIMORIS SVCS COM 74164F103 42,434 -43,763 -50.77 1,155 -46.35 0.0005
2018-05-15 2018-03-31 13F PRIMORIS SVCS COM 74164F103 86,197 23,846 38.24 2,153 27.02 0.0009
2018-02-14 2017-12-31 13F PRIMORIS SVCS COM 74164F103 62,351 59,746 2,293.51 1,695 2,101.30 0.0007
2017-11-14 2017-09-30 13F PRIMORIS SVCS COM 74164F103 2,605 2,605 77 0.0000
2017-11-14 2017-06-30 13F/A-1 PRIMORIS SVCS COM 74164F103 0 -766 -100.00 0 -100.00
2017-11-14 2017-03-31 13F/A-1 PRIMORIS SVCS COM 74164F103 766 -72 -8.59 18 -5.26 0.0000
2017-05-12 2017-03-31 13F PRIMORIS SVCS COM 74164F103 766 -72 18
2017-02-14 2016-12-31 13F PRIMORIS SVCS COM 74164F103 838 778 1,296.67 19 1,800.00 0.0000
2016-11-14 2016-09-30 13F PRIMORIS SVCS COM 74164F103 60 -1,090 -94.78 1 -95.45 0.0000
2016-08-12 2016-06-30 13F PRIMORIS SVCS COM 74164F103 1,150 136 13.41 22 -12.00 0.0000
2016-05-12 2016-03-31 13F PRIMORIS SVCS COM 74164F103 1,014 -1,028 -50.34 25 -44.44 0.0000
2016-02-16 2015-12-31 13F PRIMORIS SVCS COM 74164F103 2,042 -1,694 -45.34 45 -32.84 0.0000
2015-11-13 2015-09-30 13F PRIMORIS SVCS COM 74164F103 3,736 -4,974 -57.11 67 -61.27 0.0000
2015-08-14 2015-06-30 13F PRIMORIS SVCS COM 74164F103 8,710 -54,186 -86.15 173 -84.00 0.0001
2015-05-14 2015-03-31 13F PRIMORIS SVCS COM 74164F103 62,896 4,118 7.01 1,081 -20.86 0.0007
2015-02-17 2014-12-31 13F PRIMORIS SVCS COM 74164F103 58,778 58,778 1,366 0.0010
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2018-02-14 2017-12-31 13F PRIMORIS SVCS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-11-14 2017-09-30 13F PRIMORIS SVCS COM Call 184,086 5,416 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2025-08-14 2025-06-30 13F PRIMORIS SVCS COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-05-13 2025-03-31 13F PRIMORIS SVCS COM Put 400 23 n/a n/a n/a
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.