Triple Frond Partners LLC: ILLUMINA INC (ILMN): Quarterly 13F Position History
As of Q1 2026, Triple Frond Partners LLC reported 306,460 shares of ILLUMINA INC (ILMN), worth $37.8M and representing 3.9% of its 13F equity book. Quarter-over-quarter share count change: 67,700 (-18.1%) . The position first appeared in Q3 2025 and has been disclosed across 3 13F-HR filings in Pactolio's tracked window.
- 306,460Shares Held (Latest Filing)
- $37.8MReported Market Value (Latest Filing)
- 3.9%Portfolio Weight (% of 13F Equity Book)
- 67,700Quarter-over-Quarter Share Change
- -$11.3MQuarter-over-Quarter Value Change
- 390,600Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 3 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 306,460 | 67,700 | -18.1% | $37.8M | 3.9% | $123.3 |
| Q4 2025 | 374,160 | 16,440 | -4.2% | $49.1M | 5.1% | $131.2 |
| Q3 2025 | 390,600 | — | — | $37.1M | 4.0% | $95.0 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares — a quarter-end mark, not the manager's cost basis. See the full methodology document for the normalization rules.
When did Triple Frond Partners LLC first disclose a ILMN position in 13F-HR filings?
Triple Frond Partners LLC first reported ILLUMINA INC (ILMN) on its 13F-HR filing for the period ending 2025-09-30 (Q3 2025). The position has appeared on 3 reported quarters within Pactolio's tracked window.
What was Triple Frond Partners LLC's most recent quarter-over-quarter share-count change in ILMN?
Between Q4 2025 and Q1 2026, Triple Frond Partners LLC reduced its ILMN position by 67,700 shares (-18.1%), leaving 306,460 shares at a market value of $37.8M.
Does the implied price-per-share represent Triple Frond Partners LLC's cost basis in ILMN?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.