Wisconsin’s investment board saw fit to significantly add to its bitcoin (BTC) bet in the last three months of the year. The State of Wisconsin Investment Board (SWIB) disclosed ownership of just over 6 million shares of BlackRock’s iShares Bitcoin Trust (IBIT) as of the Dec.

State of Wisconsin Investment Board, Madison, owned about 6 million shares of iShares Bitcoin Trust ETF, a bitcoin exchange-traded fund, valued at about $321 million as of Dec. 31, according to SWIB’s 13F holdings report filed with the Securities and Exchange Commission.

Bitcoin (BTC) reserve has become a growing trend in the United States, with twenty states pushing legislation to establish a reserve for the top crypto. This follows Abu Dhabi sovereign wealth fund Mubadala Investment Company's $461 million investment into BlackRock's iShares Bitcoin Trust (IBIT).

The ownership interest was held via Mubadala Investments, one of the country's sovereign wealth funds

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The State of Wisconsin Investment Board (SWIB) has stacked up an additional 3.1 million shares of BlackRock’s iShares Bitcoin Trust (IBIT), pushing its total Bitcoin ETF holdings to around $588 million,