LOUISBOURG INVESTMENTS INC. ASML — ASML HOLDING NV

Ownership history in LOUISBOURG INVESTMENTS INC.  ·  7 quarters on record

AI Ownership Summary

LOUISBOURG INVESTMENTS INC. reported ASML HOLDING NV (ASML) in 7 quarterly 13F filings from 2025 Q1 through 2026 Q3. Peak portfolio weight reached 0.7% in 2026 Q3. The latest visible filing shows ASML at 0.70% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings.

What this ASML ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was LOUISBOURG INVESTMENTS INC.'s position in ASML HOLDING NV, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2026 Q3

ASML was reported at 0.70% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.7% in 2026 Q3

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2025 Q1 to 2026 Q3

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

ASML stock page LOUISBOURG INVESTMENTS INC. fund profile LOUISBOURG INVESTMENTS INC. full holdings
How LOUISBOURG INVESTMENTS INC. held ASML — position size vs. price
% of Fund (quarterly)    ASML price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 7 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q3 ADDED — — — 2,100 +2,000 +2000.0% 0.70% $3.8M 2026-10-20 $1630.84
2026 Q2 REDUCED 66.7% -10.8% ✅ 100 -200 -66.7% 0.04% $199K 2026-07-23 $1800.67
2026 Q1 REDUCED 53.8% +42.9% ❌ 300 -350 -53.8% 0.07% $396K 2026-04-22 $1438.65
2025 Q4 REDUCED 23.5% +23.6% ❌ 650 -200 -23.5% 0.14% $695K 2026-01-16 $1352.07
2025 Q3 REDUCED 29.2% +10.3% ❌ 850 -350 -29.2% 0.18% $823K 2025-10-09 $974.12
2025 Q2 UNCHANGED — — — 1,200 — 0% 0.23% $962K 2025-07-24 $718.51
2025 Q1 INITIATED — — — 1,200 — — 0.22% $795K 2025-04-17 $632.40

🏢 Other funds also holding ASML

As of 2026 Q3 — sorted by position size

REGENTS OF THE UNIVERSITY OF CALIFORNIA 3Y 7Y 9.59% Hyperion Asset Management Ltd 3Y 7.45% Saratoga Research & Investment Management 3Y 7Y 5.73% Eldred Rock Partners, LLC 5.62% Henry James International Management Inc. 3Y 7Y 5.49% Chronos Wealth Management, LLC 3Y 5.2% Cox Capital Mgt LLC 3Y 7Y 5.13% NORTH POINT PORTFOLIO MANAGERS CORP/OH 3Y 7Y 4.88% Burkett Asset Management Ltd 4.72% Phraction Management LLC 3Y 4.37%

FAQ About LOUISBOURG INVESTMENTS INC. and ASML

These are the practical questions this page is built to answer before you even open the full history table.

How long has LOUISBOURG INVESTMENTS INC. reported owning ASML?

LOUISBOURG INVESTMENTS INC. reported ASML across 7 quarterly 13F filings, from 2025 Q1 through 2026 Q3.

What was the largest reported ASML position in LOUISBOURG INVESTMENTS INC.'s portfolio?

The largest reported portfolio weight for ASML was 0.70% in 2026 Q3.

What is the latest reported ASML position on this page?

The most recent filing on this page is 2026 Q3, when LOUISBOURG INVESTMENTS INC. reported 2,100 shares, equal to 0.70% of portfolio, with an estimated market value of $3.8M.

What does the chart on this ASML ownership page compare?

The chart compares LOUISBOURG INVESTMENTS INC.'s quarterly ASML portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did LOUISBOURG INVESTMENTS INC. time their ASML position?

Based on 13F filing dates vs. subsequent ASML price moves, LOUISBOURG INVESTMENTS INC. correctly timed 2 out of 5 reported position changes (40%). The annualised alpha on ASML relative to SPY over the holding period was +44.2%.

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