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Livermore
Livermore
ZHEN

Rubicon Founders LLC

SEC CIK
0002032489
Latest filing
Aug 14, 2026

The latest 13F from Rubicon Founders LLC covers Q2 2026 (filed Aug 14, 2026): 3 long positions worth $196.4M. The top 10 holdings make up 100.0% of the portfolio, and the largest is Privia Health Group, Inc. (PRVA) at 78.2%. Livermore has 17 filings on Form 13F from this institution, going back to Q4 2023.

What changed in Q2 2026

Share counts compared with Q1 2026: how many positions were new, added to, reduced or sold out, and the biggest buys and sells. Dollar amounts are estimated at the quarter-end prices implied by the filing.

Full comparison
New
0
Added
1
Est. +$576.7K
Reduced
1
Est. −$15.7M
Sold out
0

Top 5 holdings

Share of this quarter's portfolio value

  1. PRVAPrivia Health Group, Inc.
    78.2%$153.6MHistory
  2. EVHEvolent Health, Inc.
    16.0%$31.5MHistory
  3. AGLagilon health, inc.
    5.7%$11.3MHistory

Biggest buys

New and added positions, by estimated amount bought

  1. PRVAPrivia Health Group, Inc.
    +$576.7KAddedHistory

Largest weight increases

New and added positions, by percentage points of the portfolio gained

None this quarter.

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. AGLagilon health, inc.
    −$15.7MReducedHistory

Largest weight decreases

Reduced and sold-out positions, by percentage points of the portfolio lost

None this quarter.

Metrics

13F metrics for Q2 2026, computed only from the numbers in the filings. Definitions below.

Portfolio value
$196.4M
+$58.8M (+42.8%) vs. prior quarter
Positions
3
0 vs. prior quarter
Top 10 concentration
100.0%
Top 10 as share of value
Turnover
0.3%
Q2 2026, one quarter
Average holding period
9.9 quarters
Weighted by value

How these are calculated

  • Portfolio value: the market value of all long positions in the 13F, as reported at quarter end, excluding options.
  • Top 10 concentration: the combined value of the 10 largest positions as a share of portfolio value.
  • Turnover: the smaller of this quarter's estimated purchases and estimated sales, divided by the average of this and last quarter's portfolio value. Estimates multiply the change in shares by the quarter-end price implied by the filing (market value divided by shares); new positions use this quarter's value and sold-out positions last quarter's. Only positions reported in shares count, and it is not calculated when the previous quarter was not filed.
  • Average holding period: how many consecutive quarters each current position has been held (including this one; a quarter without the position or without a filing starts the count over), weighted by this quarter's value. Counting starts with the first 13F in Livermore (Q4 2023), so positions held before then are understated.

13F filings by quarter

11 quarters, going back to Q4 2023. Bars show each quarter's 13F portfolio value; quarters without a filing are left blank.

Peak $212.8M (Q2 2025)

Q4 2023: $120.0MQ1 2024: $102.1MQ2 2024: $100.3MQ3 2024: $105.1MQ4 2024: $112.9MQ1 2025: $162.6MQ2 2025: $212.8MQ3 2025: $199.4MQ4 2025: $164.5MQ1 2026: $137.6MQ2 2026: $196.4M
Q4 2023Q2 2026
13F filings of Rubicon Founders LLC by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 14, 20263$196.4MPRVAEVHAGLvs. Q1 2026SEC
Q1 2026May 15, 20263$137.6MPRVAEVHAGLvs. Q4 2025SEC
Q4 2025May 15, 2026Amended3$164.5MPRVAEVHAGLvs. Q3 2025SECSEC
Q3 2025May 15, 2026Amended3$199.4MPRVAEVHAGLvs. Q2 2025SECSEC
Q2 2025May 15, 2026Amended3$212.8MPRVAEVHAGLvs. Q1 2025SECSECSEC
Q1 2025May 15, 2026Amended3$162.6MPRVAAGLEVHvs. Q4 2024SECSECSEC
Q4 2024Feb 12, 20251$112.9MPRVAvs. Q3 2024SEC
Q3 2024Nov 14, 20241$105.1MPRVAvs. Q2 2024SEC
Q2 2024Nov 14, 20241$100.3MPRVAvs. Q1 2024SEC
Q1 2024Nov 14, 20241$102.1MPRVAvs. Q4 2023SEC
Q4 2023Nov 14, 20241$120.0MPRVA–SEC

13D and 13G filings

Companies where Rubicon Founders LLC reports owning 5% or more on Schedule 13D or 13G, and its latest filings.

Current stakes of 5% or more

Rubicon Founders LLC does not currently report owning 5% or more of any company.

Latest filings

4 filings on file made by Rubicon Founders LLC or listing it as a reporting person, newest first.

Schedule 13D and 13G filings by Rubicon Founders LLC
CompanyFiled (ET)FilerFormStakeChangeEvent dateFiling
PRVAPrivia Health Group, Inc.Sep 8, 20262:48 PM ETBoehler Adamand 4 others13D5.07%6.47M shares+0.37 ppfrom 4.70%Sep 1, 2026SEC
EVHEvolent Health, Inc.Nov 14, 20255:26 PM ETBoehler Adamand 5 others13G5.21%5.82M sharesNewNov 13, 2025SEC
PRVAPrivia Health Group, Inc.Oct 24, 20254:23 PM ETBoehler Adamand 4 others13G/A4.70%5.77M shares−0.44 ppfrom 5.14%Below 5%Oct 20, 2025SEC
PRVAPrivia Health Group, Inc.Aug 12, 20256:04 AM ETBoehler Adamand 4 others13G5.14%6.28M sharesNewAug 7, 2025SEC