State of Wisconsin’s investment board discloses nearly $100M of BlackRock’s bitcoin ETF

The holdings disclosure is the first from a state investment board

article-image

rblfmr/Shutterstock modified by Blockworks

share

The state of Wisconsin’s investment board disclosed holdings in BlackRock’s bitcoin ETF on Tuesday. 

The 13F filing with the Securities and Exchange Commission shows that the board bought $99 million, or roughly 2.4 million shares, of IBIT. The filing also revealed that the board holds roughly one million shares of Grayscale’s bitcoin ETF. 

According to its website, the agency is an investment organization that manages the Wisconsin Retirement System and the State Investment Funds alongside some smaller funds.

“SWIB has been successful in generating respectable returns and maintaining the trust of the beneficiaries and stakeholders of the funds we oversee,” the site said. 

SWIB declined to comment on the holdings in the disclosure. 

Investment managers are required to disclose their holdings in 13F forms if they manage $100 million or more. The filings show what firms bought and held through the last quarter. 

Read more: What 13F filings tell us about institutional appetite for bitcoin ETFs

Blockworks previously reported that BNY Mellon as well as BNP Paribas disclosed holdings, though both banks owned far less shares in comparison to Wisconsin’s disclosure on Tuesday. 

Paribas disclosed roughly 1,000 shares, and BNY Mellon had 20,000 shares of IBIT and 7,000 shares of Grayscale. 

Other investment managers have disclosed much larger holdings. Quattro Advisors, a Pittsburgh-based registered investment manager, disclosed 468,000 shares of IBIT, for example. 

On Monday, Wolverine Asset Management reported that it owned 874,000 shares of Fidelity’s bitcoin ETF. So far, that’s the largest Fidelity position that’s been disclosed. 

Investment managers have until mid-May to file their 13Fs. 

Updated May 14, 2024 at 3:05 pm ET: Noted that SWIB declined to comment, updated number of Grayscale shares.


Get the news in your inbox. Explore Blockworks newsletters:

Tags

Decoding crypto and the markets. Daily, with Byron Gilliam.

Upcoming Events

Javits Center North | 445 11th Ave

Tues - Thurs, March 24 - 26, 2026

Blockworks’ Digital Asset Summit (DAS) will feature conversations between the builders, allocators, and legislators who will shape the trajectory of the digital asset ecosystem in the US and abroad.

Old Billingsgate

Mon - Wed, October 13 - 15, 2025

Blockworks’ Digital Asset Summit (DAS) will feature conversations between the builders, allocators, and legislators who will shape the trajectory of the digital asset ecosystem in the US and abroad.

recent research

Unlocked by Template (1).jpg

Research

As AI supercharges surveillance, privacy becomes a prerequisite and the winning stack will combine confidentiality with selective disclosure. Zcash’s Tachyon, composable standards on Ethereum/Solana, and compliance-aware pools aim to make private rails the new norm.

article-image

Pipe’s testnet has delivered 60+ PB of data across ~290,000 Point of Presence (PoP) nodes

article-image

375ai will hold TGE at the end of the month, CEO Harry Dewhirst told Blockworks

article-image

Block’s subsidiary adds direct Bitcoin integration and AI-powered ordering tools for small businesses seeking streamlined transactions

by Blockworks /
article-image

The deal integrates Dinero’s staking suite into Plume’s real-world asset platform as it gains SEC transfer agent status

by Blockworks /
article-image

The state’s decision opens staking access to New Yorkers, signaling a regulatory shift toward broader crypto participation

by Blockworks /
article-image

The startup says it aims to rival Stripe and Worldpay by using stablecoins to speed merchant settlements from days to seconds

by Blockworks /