CIK: 0001811568
Total reported value
$7.8B
Reporting period: 2026-03-31 · Number of holdings: 664
Investment Management Corp of Ontario disclosed 664 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $7.8B and a quarterly turnover rate of 25.8%.
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Investment Management Corp of Ontario's disclosed holdings carry a Herfindahl concentration index of 0.014 — mathematically equivalent to about 72 equally-sized positions, well below its 664 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 2.88), with a handful of outsized bets alongside many smaller positions.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Trim MSFT
+0.3% -$88.1M
Trim BKLN
-19.9% -$60.7M
Add NEE
+289.2% $55.2M
Trim AAPL
-1.2% -$34.9M
Add SO
+517.5% $48.4M
Trim TSLA
-7.9% -$40.7M
Showing top 200 holdings (of 664 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | NVDA | Nvidia CORP | Stock-Tech | 6.04% | -0.38% | +3.86% | |
| 2 | AAPL | Apple INC | Stock-Tech | 5.31% | -0.64% | -1.24% | |
| 3 | MSFT | Microsoft CORP | Stock-Tech | 3.75% | -1.29% | +0.25% | |
| 4 | AMZN | Amazon.com INC | Stock-Consumer Disc | 2.83% | -0.29% | +3.98% | |
| 5 | BKLN | Invesco Senior Loan ETF | ETF-Other | 2.75% | -0.90% | -19.89% | |
| 6 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 2.53% | — | +8.71% | |
| 7 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 1.99% | -0.28% | -0.92% | |
| 8 | AVGO | Broadcom INC | Stock-Tech | 1.85% | -0.32% | -1.47% | |
| 9 | IVV | Ishares Core S&p 500 ETF | ETF-Large Cap & Growth | 1.77% | — | -1.67% | |
| 10 | META | Meta Platforms Inc-class A | Stock-Comm Services | 1.77% | -0.32% | +1.02% | |
| 11 | TSLA | Tesla INC | Stock-Consumer Disc | 1.67% | -0.60% | -7.92% | |
| 12 | JPM | Jpmorgan Chase & Co | Stock-Financials | 1.32% | -0.21% | -2.48% | |
| 13 | LLY | Eli Lilly & Co | Stock-Healthcare | 0.96% | — | +7.14% | |
| 14 | NEE | Nextera Energy INC | Stock-Utilities | 0.91% | +0.71% | +289.23% | |
| 15 | BRK-B | Berkshire Hathaway Inc-cl B | Stock-Other | 0.82% | — | +7.24% | |
| 16 | XOM | Exxon Mobil CORP | Stock-Energy | 0.81% | +0.20% | -3.04% | |
| 17 | HEI-A | Heico Corp-class A | Stock-Other | 0.77% | -0.18% | +0.17% | |
| 18 | SO | Southern Co/the | Stock-Utilities | 0.73% | +0.62% | +517.53% | |
| 19 | V | Visa Inc-class A Shares | Stock-Financials | 0.70% | -0.15% | -1.32% | |
| 20 | JNJ | Johnson & Johnson | Stock-Healthcare | 0.69% | — | -3.07% | |
| 21 | WMT | Walmart INC | Stock-Consumer Staples | 0.66% | — | +2.07% | |
| 22 | DUK | Duke Energy CORP | Stock-Utilities | 0.66% | +0.54% | +427.52% | |
| 23 | CVX | Chevron CORP | Stock-Energy | 0.64% | +0.30% | +42.80% | |
| 24 | ABBV | Abbvie INC | Stock-Healthcare | 0.62% | — | +22.08% | |
| 25 | MA | Mastercard INC - A | Stock-Financials | 0.61% | — | +3.15% | |
| 26 | WM | Waste Management INC | Stock-Industrials | 0.61% | — | +0.74% | |
| 27 | MDLN | Medline Inc-cl A | Stock-Other | 0.58% | +0.58% | NEW | |
| 28 | PLTR | Palantir Technologies Inc-a | Stock-Tech | 0.55% | — | +27.42% | |
| 29 | MU | Micron Technology INC | Stock-Tech | 0.55% | +0.17% | +26.41% | |
| 30 | BAC | Bank Of America CORP | Stock-Financials | 0.55% | — | +37.17% | |
| 31 | RY | Royal Bank Of Canada | Stock-Financials | 0.54% | — | -1.27% | |
| 32 | COST | Costco Wholesale CORP | Stock-Consumer Staples | 0.52% | — | -3.82% | |
| 33 | NFLX | Netflix INC | Stock-Comm Services | 0.52% | — | -2.44% | |
| 34 | HWM | Howmet Aerospace INC | Stock-Industrials | 0.52% | — | -6.26% | |
| 35 | CEG | Constellation Energy | Stock-Utilities | 0.50% | +0.37% | +397.94% | |
| 36 | CAT | Caterpillar INC | Stock-Industrials | 0.50% | +0.17% | +25.47% | |
| 37 | KO | Coca-cola Co/the | Stock-Consumer Staples | 0.47% | +0.13% | +29.15% | |
| 38 | CRWV | Coreweave Inc-cl A | Stock-Tech | 0.46% | -0.28% | -40.69% | |
| 39 | GEV | GE Vernova INC | Stock-Industrials | 0.46% | +0.16% | +20.21% | |
| 40 | RTX | Rtx CORP | Stock-Industrials | 0.45% | +0.13% | +37.09% | |
| 41 | CRH | CRH plc | Stock-Materials | 0.45% | — | -3.58% | |
| 42 | AMD | Advanced Micro Devices | Stock-Tech | 0.43% | — | +12.41% | |
| 43 | PG | Procter & Gamble Co/the | Stock-Consumer Staples | 0.43% | — | -9.73% | |
| 44 | SHOP | Shopify INC - Class A | Stock-Tech | 0.43% | — | +9.71% | |
| 45 | T | At&t INC | Stock-Comm Services | 0.42% | +0.18% | +57.79% | |
| 46 | D | Dominion Energy INC | Stock-Utilities | 0.41% | +0.35% | +585.57% | |
| 47 | LRCX | Lam Research CORP | Stock-Tech | 0.41% | +0.14% | +24.42% | |
| 48 | EIX | Edison International | Stock-Utilities | 0.40% | +0.37% | +876.70% | |
| 49 | GS | Goldman Sachs Group INC | Stock-Financials | 0.40% | — | +8.53% | |
| 50 | MSI | Motorola Solutions INC | Stock-Tech | 0.40% | — | -17.92% |
Performance for Q3 2026
+2.7%
Performance Last 4 Quarters
+10%
Based on 75% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 664 | $7.8B | 26 | |
| 2025-12-31 | 669 | $7.5B | 31 | |
| 2025-09-30 | 639 | $6.6B | 41 | |
| 2025-06-30 | 646 | $6.9B | 0 | |
| 2025-03-31 | 662 | $4.9B | 100 | |
| 2024-12-31 | 361 | $3.0B | 0 | |
| 2024-09-30 | 672 | $4.5B | 0 | |
| 2024-06-30 | 647 | $3.7B | 0 | |
| 2024-03-31 | 618 | $3.4B | 0 | |
| 2023-12-31 | 679 | $4.1B | 0 | |
| 2023-09-30 | 216 | $2.5B | 0 | |
| 2023-06-30 | 189 | $2.4B | 0 | |
| 2023-03-31 | 164 | $2.4B | 0 | |
| 2022-12-31 | 206 | $2.1B | 0 | |
| 2022-09-30 | 18 | $621.4M | 0 | |
| 2022-06-30 | 17 | $937.3M | 0 | |
| 2022-03-31 | 52 | $1.1B | 0 | |
| 2021-12-31 | 61 | $2.2B | 0 | |
| 2021-09-30 | 19 | $1.6B | 0 | |
| 2021-06-30 | 17 | $2.3B | 94 | |
| 2021-03-31 | 13 | $5.9B | 16 | |
| 2020-12-31 | 55 | $5.9B | 0 |
Investment Management Corp of Ontario's most significant position changes for 2026-03-31: New buy: Medline Inc-cl A (MDLN); Add: Microsoft CORP (MSFT) — shares +0.25%; Trim: Invesco Senior Loan ETF (BKLN) — shares -19.89%; Add: Nextera Energy INC (NEE) — shares +289.23%; Trim: Apple INC (AAPL) — shares -1.24%.
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | NEE | Nextera Energy INC | +0.7% | +289.23% | Add |
| 2 | SO | Southern Co/the | +0.6% | +517.53% | Add |
| 3 | DUK | Duke Energy CORP | +0.5% | +427.52% | Add |
| 4 | CEG | Constellation Energy | +0.4% | +397.94% | Add |
| 5 | EIX | Edison International | +0.4% | +876.70% | Add |
| 6 | D | Dominion Energy INC | +0.4% | +585.57% | Add |
| 7 | ED | Consolidated Edison INC | +0.3% | +476.77% | Add |
| 8 | CVX | Chevron CORP | +0.3% | +42.80% | Add |
| 9 | PPL | Ppl CORP | +0.3% | +1080.44% | Add |
| 10 | EXC | Exelon CORP | +0.3% | +274.53% | Add |
| 11 | VST | Vistra CORP | +0.2% | +420.52% | Add |
| 12 | EVRG | Evergy INC | +0.2% | +1410.57% | Add |
| 13 | ETR | Entergy CORP | +0.2% | +494.59% | Add |
| 14 | PEG | Public Service Enterprise Gp | +0.2% | +487.95% | Add |
| 15 | XOM | Exxon Mobil CORP | +0.2% | -3.04% | Trim |
| 16 | T | At&t INC | +0.2% | +57.79% | Add |
| 17 | AEP | American Electric Power | +0.2% | +97.59% | Add |
| 18 | MU | Micron Technology INC | +0.2% | +26.41% | Add |
| 19 | CAT | Caterpillar INC | +0.2% | +25.47% | Add |
| 20 | GEV | GE Vernova INC | +0.2% | +20.21% | Add |
| 21 | LNT | Alliant Energy CORP | +0.2% | +1008.46% | Add |
| 22 | FIX | Comfort Systems USA INC | +0.2% | +334.05% | Add |
| 23 | CAH | Cardinal Health INC | +0.1% | +242.17% | Add |
| 24 | LRCX | Lam Research CORP | +0.1% | +24.42% | Add |
| 25 | WDC | Western Digital CORP | +0.1% | +102.27% | Add |
| 26 | SRE | Sempra | +0.1% | +194.51% | Add |
| 27 | RTX | Rtx CORP | +0.1% | +37.09% | Add |
| 28 | KO | Coca-cola Co/the | +0.1% | +29.15% | Add |
| 29 | AMAT | Applied Materials INC | +0.1% | +17.46% | Add |
| 30 | WEC | Wec Energy Group INC | +0.1% | +373.92% | Add |
| 31 | AME | Ametek INC | +0.1% | +224.51% | Add |
| 32 | CDNS | Cadence Design Sys INC | +0.1% | +154.25% | Add |
| 33 | ADP | Automatic Data Processing | -0.1% | -48.43% | Trim |
| 34 | V | Visa Inc-class A Shares | -0.2% | -1.32% | Trim |
| 35 | ORCL | Oracle CORP | -0.2% | -19.15% | Trim |
| 36 | HEI-A | Heico Corp-class A | -0.2% | +0.17% | Add |
| 37 | AJG | Arthur J Gallagher & Co | -0.2% | -36.96% | Trim |
| 38 | JPM | Jpmorgan Chase & Co | -0.2% | -2.48% | Trim |
| 39 | PTC | Ptc INC | -0.2% | -92.35% | Trim |
| 40 | CRWV | Coreweave Inc-cl A | -0.3% | -40.69% | Trim |
| 41 | GOOG | Alphabet Inc-cl C | -0.3% | -0.92% | Trim |
| 42 | AMZN | Amazon.com INC | -0.3% | +3.98% | Add |
| 43 | META | Meta Platforms Inc-class A | -0.3% | +1.02% | Add |
| 44 | AVGO | Broadcom INC | -0.3% | -1.47% | Trim |
| 45 | NVDA | Nvidia CORP | -0.4% | +3.86% | Add |
| 46 | TSLA | Tesla INC | -0.6% | -7.92% | Trim |
| 47 | AAPL | Apple INC | -0.6% | -1.24% | Trim |
| 48 | BKLN | Invesco Senior Loan ETF | -0.9% | -19.89% | Trim |
| 49 | MSFT | Microsoft CORP | -1.3% | +0.25% | Add |
| 50 | MDLN | Medline Inc-cl A | — | NEW | New buy |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-15 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-17 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-14 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-14 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-05-15 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-14 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-14 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-14 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-15 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-14 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-11-14 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-08-14 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-05-15 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-02-14 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-14 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-08-15 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-20 | Amendment | View on EDGAR |
| 2022-03-31 | 2022-05-16 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-14 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-11-15 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-08-16 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-05-17 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-02-16 | 13F-HR | View on EDGAR |
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