Louisbourg Investments
Louisbourg Investments reported 209 stocks worth $545M in its 13F filing for Q3 2026, filed Oct 20, 2026. Its largest holdings are CNI (4.9%), SHOP (3.3%) and MSFT (3.2%). Compared with Q2 2026, the fund opened new positions in TOST and MRSH, added to MSFT, TSM and BN, trimmed CNI, SHOP and CVE and sold out of HBM, AG and CBOE.
Holdings
| # | Stock | Value | Weight | Shares | Change | Shares, 8 qtrs | Held |
|---|---|---|---|---|---|---|---|
| 1 |  CNI Canadian Natl RY Co F | $26.9M | 4.9% | 225K | −27K (−11%) | 8 of 8 | |
| 2 |  SHOP Shopify Inc | $17.9M | 3.3% | 120K | −33K (−22%) | 8 of 8 | |
| 3 |  MSFT Microsoft Corp | $17.2M | 3.2% | 42K | +230 (+1%) | 8 of 8 | |
| 4 |  TSM Taiwan Semiconductor Mfg Ltd | $15.2M | 2.8% | 38K | +7,927 (+26%) | 8 of 8 | |
| 5 |  CVE Cenovus Energy Inc | $14.8M | 2.7% | 476K | −15K (−3%) | 8 of 8 | |
| 6 |  SU Suncor Energy Inc New | $14.7M | 2.7% | 217K | −21K (−9%) | 8 of 8 | |
| 7 |  IVV Ishares TR | $13M | 2.4% | 17K | −330 (−2%) | 8 of 8 | |
| 8 |  GOOG Alphabet Inc | $12.7M | 2.3% | 45K | −311 (−1%) | 8 of 8 | |
| 9 |  BN Brookfield Corp Fclass A | $11.4M | 2.1% | 311K | +41K (+15%) | 8 of 8 | |
| 10 |  AMZN Amazon Com Inc | $10.4M | 1.9% | 52K | +2,339 (+5%) | 8 of 8 |
Positions at Sep 30, 2026, as reported. Change is against the fund's Q2 2026 filing; weight is the share of the fund's reported stocks.
Sold out
held in Q2 2026, gone in Q3 2026| Stock | Value last quarter | Shares sold |
|---|---|---|
 HBM Hudbay Minerals Inc | $5.2M | 220K |
 AG First Majestic Silver Corp | $5.2M | 305K |
MARSH & MCLENNAN COS INC | $3.2M | 26K |
 CBOE Cboe Global Mkts Inc | $112K | 461 |
 COR Cencora Inc | $74K | 263 |
🔒 Free account: see all 12.
Reported value
last 8 quartersThe value of the US stocks the fund reported, at quarter end prices. It moves with the market as well as with buying and selling.
Filings for Q3 2026
straight from the SEC| Filed | Form | Quarter | |
|---|---|---|---|
| Oct 20, 2026 | 13F-HR | Q3 2026 | SEC filing ↗ |
Other superinvestors
All hedge fund holdings →Louisbourg Investments 13F FAQ
What does Louisbourg Investments own?
Louisbourg Investments reported 209 stocks worth $545M in its 13F filing for Q3 2026, filed Oct 20, 2026. Its largest holdings are CNI (4.9%), SHOP (3.3%) and MSFT (3.2%). The table above lists every position in the filing (the top 10 without an account).
What did Louisbourg Investments buy and sell in Q3 2026?
Compared with Q2 2026: 11 new positions, 49 added to, 76 trimmed and 12 sold out. New positions include TOST and MRSH. It sold all of HBM, AG and CBOE.
When will Louisbourg Investments file its next 13F?
Holdings as of Dec 31, 2026 are due by Feb 15, 2027. The filing appears on this page within minutes of reaching the SEC.
How much is Louisbourg Investments's portfolio worth?
The Q3 2026 filing reports $545M in US stocks. That leaves out cash, bonds, short positions and most foreign holdings, so the fund's total assets are usually larger.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Holdings come from the fund's SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. The fund may have changed its positions since. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.