Who owns KLAC? 13F holders and whale ownership
KLAC is tracked across public portfolios in Whale Analyzer. This page answers who owns KLAC, which top funds are buying KLAC, aggregate disclosed value, and recent position changes based on public data. PRIMECAP Management is the largest reported holder at $6.20B; the top five funds control 99.0% of reported ownership; institutions were net buying last quarter (8 increased, 0 reduced); the stock trades below the aggregate whale cost basis of $250.22. Top tracked holders include PRIMECAP Management, Capital Group, NPS Korea, and Baillie Gifford.
Continue to the live KLAC dashboardTop holders
| Investor | Reported value | Shares | Change |
|---|---|---|---|
| PRIMECAP Management 13F portfolio PRIMECAP Management Company holdings | $6.20B | 20.5M | Increased |
| Capital Group 13F portfolio Capital Research Global Investors holdings | $2.94B | 9.7M | Increased |
| NPS Korea 13F portfolio National Pension Service holdings | $1.10B | 3.6M | Increased |
| Baillie Gifford 13F portfolio Baillie Gifford & Co holdings | $285.6M | 946.6K | New |
| Brad Gerstner 13F portfolio Altimeter Capital holdings | $174.5M | 578.2K | New |
| Ray Dalio 13F portfolio Bridgewater Associates holdings | $99.0M | 328.1K | Increased |
| Horizon Kinetics 13F portfolio Horizon Kinetics Asset Management holdings | $6.0M | 19.9K | Increased |
| Lee Ainslie 13F portfolio Maverick Capital holdings | $1.7M | 5.6K | New |
Ownership concentration
Reported ownership of KLAC is highly concentrated across tracked institutions.
- Single largest holder: 57.4% of reported ownership
- Top 5 holders: 99.0%
- Top 10 holders: 100.0%
Whale activity this quarter
Across 8 tracked institutions, 8 increased. Net positioning is net buying.
- PRIMECAP Management — PRIMECAP Management Company ($6.20B) (▲ 742.5% qoq shares)
- Capital Group — Capital Research Global Investors ($2.94B) (▲ 898.3% qoq shares) · avg cost $277.94
- NPS Korea — National Pension Service ($1.10B) (▲ 899.4% qoq shares) · avg cost $187.81
- Baillie Gifford — Baillie Gifford & Co ($285.6M) · avg cost $174.06
- Brad Gerstner — Altimeter Capital ($174.5M) · avg cost $174.06
- Ray Dalio — Bridgewater Associates ($99.0M) (▲ 201.9% qoq shares) · avg cost $483.75
- Horizon Kinetics — Horizon Kinetics Asset Management ($6.0M) (▲ 820.1% qoq shares) · avg cost $83.43
- Lee Ainslie — Maverick Capital ($1.7M) · avg cost $146.71
Whale cost basis vs current price
The aggregate tracked cost basis is $250.22 versus a current price of $185.60, so KLAC trades below its cost basis (-25.8%). Average unrealized P&L across tracked holders: 10%.
Sector positioning — Information Technology
KLAC sits within the Information Technology sector alongside 136 other tracked names. Compare whale ownership across peers:
How to use this page
Values are reported public positions from tracked 13F filers and disclosures — not real-time ownership totals. Open the live KLAC dashboard for price charts and cross-investor scans, or read the SEC 13F guide.
Related stock holder pages
- MU whale holders — MICRON TECHNOLOGY INC
- LLY whale holders — ELI LILLY & CO
- INTC whale holders — INTEL CORP
- GOOGL whale holders — ALPHABET INC
- FLEX whale holders — FLEX LTD
- AZN whale holders — ASTRAZENECA PLC
- NVDA whale holders — NVIDIA CORPORATION
- BIIB whale holders — BIOGEN INC
Learn more in Whale Analyzer Academy
Deepen your read on KLAC with these Whale Analyzer Academy guides:
Frequently asked questions
Who owns KLAC stock?
Whale Analyzer tracks 8 public institutional holders of KLAC with a combined reported value of $10.80B. See the holder table above for the largest tracked positions.
Which top funds are buying KLAC?
Tracked institutions were net buying last quarter — 8 increased. Check the "Change" column: "New" = fresh position, "Increased" = added, "Reduced" = trimmed.
How concentrated is KLAC ownership?
The top five tracked holders report 99.0% of aggregate ownership.
Is KLAC above or below the whale cost basis?
The aggregate tracked cost basis is $250.22 versus a current price of $185.60 (-25.8%).
What does 13F ownership mean for KLAC?
Use the interactive KLAC dashboard on Whale Analyzer for real-time holder analysis, or read our 13F Alpha Signals Guide.