Institutional Manager · CIK 0000854157
STATE OF WISCONSIN INVESTMENT BOARD
MADISON, WI · File #028-02519
Latest AUM
$44.74B
Positions
2,365
Top-10 Concentration
59.0%
Filings
9
Portfolio Value Over Time
2024-03
2024-06
2024-09
2024-12
2025-03
2025-06
2025-09
2025-12
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| ADD | INVESCO EXCHANGE TRADED FD T | IVZ | +1,060,181 | +$203.1M | +$13.8M |
| ADD | NETFLIX INC | NFLX | +2,011,694 | +$188.6M | -$258.0M |
| REDUCE | APPLE INC | AAPL | -417,587 | -$113.5M | +$140.1M |
| REDUCE | NVIDIA CORPORATION | NVDA | -543,617 | -$101.4M | -$1.1M |
| REDUCE | ZILLOW GROUP INC | Z | -1,433,241 | -$97.8M | -$12.6M |
| NEW | ROYAL BK CDA | 780087102 | +513,881 | +$87.7M | $0 |
| REDUCE | MICROSOFT CORP | MSFT | -161,229 | -$78.0M | -$131.5M |
| ADD | BROOKFIELD RENEWABLE PARTNER | G16258108 | +2,732,542 | +$73.7M | +$2.5M |
| NEW | SHOPIFY INC | SHOP | +439,830 | +$70.9M | $0 |
| NEW | KRANESH CSI CHINA INTERNET | 500767306 | +2,000,000 | +$68.1M | $0 |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 20252,365 pos · $44.74B
- 13F HOLDINGS REPORTQ/E Sep 20252,366 pos · $43.62B
- 13F HOLDINGS REPORTQ/E Jun 20252,313 pos · $40.98B
- 13F HOLDINGS REPORTQ/E Mar 20252,241 pos · $38.71B
- 13F HOLDINGS REPORTQ/E Dec 20242,263 pos · $39.20B
- 13F HOLDINGS REPORTQ/E Sep 20242,282 pos · $39.77B
- 13F HOLDINGS REPORTQ/E Jun 20242,299 pos · $37.83B
- 13F HOLDINGS REPORTQ/E Mar 20242,216 pos · $37.90B
- 13F HOLDINGS REPORTQ/E Dec 20232,506 pos · $32.02B
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | NVIDIA CORPORATION | NVDA | 12,606,695 | $2.35B | 10.70% |
| 2 | APPLE INC | AAPL | 7,711,087 | $2.10B | 9.54% |
| 3 | MICROSOFT CORP | MSFT | 3,669,627 | $1.77B | 8.08% |
| 4 | INVESCO EXCHANGE TRADED FD T | IVZ | 8,485,519 | $1.63B | 7.40% |
| 5 | AMAZON COM INC | AMZN | 4,987,135 | $1.15B | 5.24% |
| 6 | ALPHABET INC | GOOG | 3,024,412 | $946.6M | 4.31% |
| 7 | BROADCOM INC | AVGO | 2,378,575 | $823.2M | 3.75% |
| 8 | ALPHABET INC | GOOG | 2,536,050 | $795.8M | 3.62% |
| 9 | META PLATFORMS INC | META | 1,124,442 | $742.2M | 3.38% |
| 10 | TESLA INC | TSLA | 1,466,810 | $659.7M | 3.00% |
| 11 | FOX CORP | FOX | 7,775,600 | $504.9M | 2.30% |
| 12 | BERKSHIRE HATHAWAY INC DEL | BRK-A | 619 | $467.2M | 2.13% |
| 13 | JPMORGAN CHASE & CO. | VYLD | 1,431,301 | $461.2M | 2.10% |
| 14 | ELI LILLY & CO | LLY | 416,718 | $447.8M | 2.04% |
| 15 | HARBOR ETF TRUST | 41151J877 | 9,871,200 | $405.1M | 1.84% |
| 16 | BERKSHIRE HATHAWAY INC DEL | BRK-A | 720,767 | $362.3M | 1.65% |
| 17 | VISA INC | V | 880,068 | $308.6M | 1.41% |
| 18 | EXXON MOBIL CORP | XOM | 2,208,564 | $265.8M | 1.21% |
| 19 | JOHNSON & JOHNSON | JNJ | 1,252,970 | $259.3M | 1.18% |
| 20 | ISHARES TR | 46432F859 | 5,312,625 | $259.0M | 1.18% |