Whale Rock Capital Management LLC: CORNING INC (GLW): Quarterly 13F Position History
As of Q1 2026, Whale Rock Capital Management LLC reported 2,297,424 shares of CORNING INC (GLW), worth $312.4M and representing 4.0% of its 13F equity book. Quarter-over-quarter share count change: 372,356 (-13.9%) . The position first appeared in Q2 2025 and has been disclosed across 4 13F-HR filings in Pactolio's tracked window.
- 2,297,424Shares Held (Latest Filing)
- $312.4MReported Market Value (Latest Filing)
- 4.0%Portfolio Weight (% of 13F Equity Book)
- 372,356Quarter-over-Quarter Share Change
- +$78.6MQuarter-over-Quarter Value Change
- 2,669,780Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 4 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 2,297,424 | 372,356 | -13.9% | $312.4M | 4.0% | $136.0 |
| Q4 2025 | 2,669,780 | +47,494 | +1.8% | $233.8M | 3.0% | $87.6 |
| Q3 2025 | 2,622,286 | +746,980 | +39.8% | $215.1M | 2.5% | $82.0 |
| Q2 2025 | 1,875,306 | — | — | $98.6M | 1.4% | $52.6 |
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 Whale Rock Capital Management LLC first disclose a GLW position in 13F-HR filings?
Whale Rock Capital Management LLC first reported CORNING INC (GLW) on its 13F-HR filing for the period ending 2025-06-30 (Q2 2025). The position has appeared on 4 reported quarters within Pactolio's tracked window.
What was Whale Rock Capital Management LLC's most recent quarter-over-quarter share-count change in GLW?
Between Q4 2025 and Q1 2026, Whale Rock Capital Management LLC reduced its GLW position by 372,356 shares (-13.9%), leaving 2,297,424 shares at a market value of $312.4M.
Does the implied price-per-share represent Whale Rock Capital Management LLC's cost basis in GLW?
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.