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Ken Griffin's Primoris Services Corporation (PRIM) position

Yes: as of Q1 2026, Ken Griffin holds 282K shares of PRIM worth $40M (0.0% of the disclosed portfolio). Held since at least Q1 2021; that opening coverage snapshot is not counted as a purchase.
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Current value
$40M
Shares held
282K
% of portfolio
0.0%
Est. average buy price (i)
$137.20
Quarter-end price
$143.04

Estimated trade prices

Average price in quarters with purchases
$53.70
Average prices in quarters with sales
  • Q3 2025: $107.37 (41K shares sold)
  • Q2 2025: $67.78 (64K shares sold)
  • Q3 2024: $53.35 (358K shares sold)
  • Q4 2023: $31.18 (7K shares sold)
  • Q3 2023: $32.69 (3K shares sold)
  • Q2 2023: $26.77 (159K shares sold)
  • Q1 2023: $25.27 (276K shares sold)
  • Q4 2022: $20.21 (124K shares sold)
  • Q4 2021: $25.27 (145K shares sold)

PRIM price vs Griffin's position

1Y 3Y 5Y MAX
Dates
$10$50$100$150$20020222023202420252026Added 189K shares (271.1%) · Q3 2021. Average closing price $26.87 · Price range $23.86–$30.28189KsharespurchasedSold 145K shares (55.9%) · Q4 2021. Average closing price $25.27 · Price range $21.62–$28.80145KsharessoldAdded 16K shares (14.4%) · Q1 2022. Average closing price $25.75 · Price range $23.12–$27.7516KsharespurchasedAdded 47K shares (35.6%) · Q2 2022. Average closing price $24.08 · Price range $21.40–$27.3947KsharespurchasedAdded 410K shares (230.9%) · Q3 2022. Average closing price $20.88 · Price range $16.25–$23.36410KsharespurchasedSold 124K shares (21.1%) · Q4 2022. Average closing price $20.21 · Price range $16.39–$22.34124KsharessoldSold 276K shares (59.7%) · Q1 2023. Average closing price $25.27 · Price range $22.10–$27.84276KsharessoldSold 159K shares (85.3%) · Q2 2023. Average closing price $26.77 · Price range $23.77–$30.60159KsharessoldSold 3K shares (12.6%) · Q3 2023. Average closing price $32.69 · Price range $29.51–$35.863KsharessoldSold 7K shares (30.4%) · Q4 2023. Average closing price $31.18 · Price range $29.16–$33.567KsharessoldAdded 279K shares (over 1,000%) · Q1 2024. Average closing price $36.91 · Price range $31.09–$42.57279KsharespurchasedAdded 84K shares (28.3%) · Q2 2024. Average closing price $49.48 · Price range $42.25–$56.0584KsharespurchasedSold 358K shares (94.2%) · Q3 2024. Average closing price $53.35 · Price range $47.41–$59.36358KsharessoldNew position of 112K shares · Q1 2025. Average closing price $72.31 · Price range $57.27–$89.03112KsharespurchasedSold 64K shares (57.2%) · Q2 2025. Average closing price $67.78 · Price range $52.66–$80.0564KsharessoldSold 41K shares (85.1%) · Q3 2025. Average closing price $107.37 · Price range $79.61–$137.3341KsharessoldAdded 131K shares (over 1,000%) · Q4 2025. Average closing price $130.57 · Price range $116.43–$144.26131KsharespurchasedAdded 145K shares (104.9%) · Q1 2026. Average closing price $146.41 · Price range $124.85–$169.36145Ksharespurchased← Earlier —1 purchase
Average closing price · filing quarter
$146.41
Price range · filing quarter
$124.85 – $169.36
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Added +145K +$21M +104.9% 282K May 15, 2026
Q4 2025 Added +131K +$17M +1,823.9% 138K Feb 17, 2026
Q3 2025 Reduced −41K −$4.4M −85.1% 7K Nov 14, 2025
Q2 2025 Reduced −64K −$4.4M −57.2% 48K Aug 14, 2025
Q1 2025 New +112K +$8.1M – 112K May 15, 2025
Q3 2024 Reduced −358K −$19M −94.2% 22K Nov 14, 2024
Q2 2024 Added +84K +$4.1M +28.3% 380K Aug 14, 2024
Q1 2024 Added +279K +$10M +1,672.1% 296K May 15, 2024
Q4 2023 Reduced −7K −$228K −30.4% 17K Feb 14, 2024
Q3 2023 Reduced −3K −$114K −12.6% 24K Nov 14, 2023
Q2 2023 Reduced −159K −$4.3M −85.3% 27K Aug 14, 2023
Q1 2023 Reduced −276K −$7.0M −59.7% 187K May 15, 2023
Q4 2022 Reduced −124K −$2.5M −21.1% 463K Feb 14, 2023
Q3 2022 Added +410K +$8.6M +230.9% 587K Nov 14, 2022
Q2 2022 Added +47K +$1.1M +35.6% 177K Aug 15, 2022
Q1 2022 Added +16K +$424K +14.4% 131K May 16, 2022
Q4 2021 Reduced −145K −$3.7M −55.9% 114K Feb 14, 2022
Q3 2021 Added +189K +$5.1M +271.1% 259K Nov 15, 2021
Q2 2021 Added +6K +$202K +9.8% 70K Aug 16, 2021
Q1 2021 First covered – – – 64K May 21, 2021
Data through Q1 2026 · filed May 15, 2026
20 grouped rows from 20 quarters

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Common questions

Does Ken Griffin own PRIM?

Yes. As of Q1 2026, Ken Griffin disclosed 282K shares of PRIM, worth $40M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Ken Griffin buy PRIM?

Ken Griffin held PRIM since at least Q1 2021, when this filing coverage begins; the opening snapshot is not a disclosed purchase. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Ken Griffin sell PRIM?

The quarter-by-quarter table above shows each sale and reduction Ken Griffin disclosed in PRIM. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of PRIM does Ken Griffin own?

Ken Griffin disclosed 282K shares of PRIM as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Ken Griffin pay for PRIM?

Ken Griffin's estimated average buy price for PRIM is $137.20, from quarter-average prices weighted by the shares added each quarter. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.