Charles River Laboratories (CRL) took the top spot in John W. Rogers Jr.'s Ariel Appreciation Fund portfolio in 2026 Q2, according to the NPORT-P filed with the SEC on August 20, 2026. The stake is 171K shares worth about $38.8M at June 30, 2026, 4.05% of the reported portfolio. CRL ranked 2nd a quarter earlier, at 3.38% of the book.
What did the 2026 Q2 filing report for CRL?
As of June 30, 2026, from the NPORT-P filed August 20, 2026.
| Value | |
|---|---|
| Portfolio weight | 4.05% |
| Shares | 171K |
| Reported value | $38.8M |
| Rank in portfolio | 1st of 45 |
| Rank a quarter earlier | 2nd |
| Largest holding a quarter earlier | MSGE at 3.53% |
| Next largest holding now | MSGE at 3.41% |
How did CRL become the largest holding?
John W. Rogers Jr. left the CRL share count unchanged in 2026 Q2; the move up came from prices and the rest of the book. MSGE, the largest holding a quarter earlier at 3.53%, was trimmed to 3.41%, now 2nd. The next largest holding now is MSGE at 3.41%.
Where does CRL sit in the John W. Rogers Jr. portfolio?
CRL is the largest of 45 stock positions in the John W. Rogers Jr. portfolio at 4.05%, above the fund's average stock position of 2%. Across the 2026 Q2 portfolio, John W. Rogers Jr. reported 45 stock positions, with 5 opened and 3 closed. The total portfolio value is about $959.5M, up 10% from the prior quarter.
How long has John W. Rogers Jr. held CRL?
John W. Rogers Jr. first reported CRL in the quarter ended September 30, 2019. The weight peaked at 4.32% in 2025 Q4. Last quarter the fund cut the position by 11%. Every reported trade is on the John W. Rogers Jr. CRL trade history page.
FAQ
What is the largest holding in the John W. Rogers Jr. portfolio?
CRL is the largest holding in the John W. Rogers Jr. portfolio as of 2026 Q2, at 4.05% of the reported value.
What was the largest holding of John W. Rogers Jr. a quarter earlier?
MSGE, at 3.53% of the book. MSGE, the largest holding a quarter earlier at 3.53%, was trimmed to 3.41%, now 2nd.
How did CRL become the largest holding of John W. Rogers Jr.?
CRL ranked 2nd a quarter earlier, at 3.38% of the book. John W. Rogers Jr. left the CRL share count unchanged in 2026 Q2; the move up came from prices and the rest of the book. MSGE, the largest holding a quarter earlier at 3.53%, was trimmed to 3.41%, now 2nd.
How many CRL shares does John W. Rogers Jr. hold?
John W. Rogers Jr. holds 171K shares of CRL, worth about $38.8M at June 30, 2026 prices.