Block Enters the S&P 500, Shares Surge After Milestone for Jack Dorsey’s Firm

When the crypto industry takes on Wall Street, it’s not just with billions. It also brings its ideology: that of a more open, decentralized, and fiercely autonomous financial world. Block’s inclusion in the S&P 500 is a strong symbol of that. Traditional finance trembles, not because it’s collapsing, but because it is forced to reckon with a force it does not control. Behind the indices, there is a cultural struggle.

Bitcoin Joins the Dance: Block in the S&P 500

Jack Dorsey’s company, recently highlighted for its intent to rename “sats” to “bits,” has just received excellent stock market news. The announcement came on a Friday: Block Inc., formerly Square, will replace Hess Corp in the S&P 500 starting the following Wednesday. Immediate result: a 9% jump in the stock price after the close. This rise is not just technical. It’s recognition.

This is not just a headline. It is trillions in passive flows inching closer to Bitcoin

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In short, index funds will now have to include a crypto company in their portfolios.

Block’s entry comes two months after Coinbase’s, another industry giant. At this pace, crypto is not just entering the system; it’s reshaping it. Block ticks all the boxes — a $44 billion market cap, positive results over the last four quarters, and more than 10% public float.

But this is not just a simple alignment of the planets. This is the effect of Jack Dorsey. The man is known for his attachment to bitcoin. His company holds more than 8,500 BTC in its treasury. They also plan to launch bitcoin payments via Square by 2026, relying on the Lightning Network. At Bitcoin 2025 in Las Vegas, Block already demonstrated these payments in a merchandise store.

In short, the former Twitter boss doesn’t follow the trend; he is mapping it out.

Behind the Stock Surge, a Bitcoin Strategy Designed Since 2021

Block was not always seen as a crypto company. Everything changed in 2021, when Square became Block. The message is clear: bitcoin takes priority. Since then, the evidence has stacked up. Recently, Jeff Walton from Strive Funds noted that Block met the S&P 500 entry criteria for 11 days straight.

Tweets are excited, but investors are taking note. Because history shows that the announcement of an index entry boosts stocks in the short term. According to a Bernstein note, companies gain an average of 4% in the 5 days following the announcement. But beyond the figures, it’s the strategy that stands out.

• +8.49% increase in Block’s stock after the announcement of its S&P 500 inclusion;
• 8,584 bitcoins held in Block’s treasury;
• $44 billion market capitalization, well above the index median;
• 2026: planned launch of bitcoin payments via Square;
• 2 months: the gap between Coinbase’s entry and Block’s entry into the S&P 500.

This rise leaves Robinhood on the sidelines. Despite a market cap nearing $100 billion, the trading platform was not selected. Block, on the other hand, had that little something extra: vision, tech, and above all… bitcoin.

Jack Dorsey doesn’t stop at bitcoin in the treasury. Recently, he introduced Bitchat, an offline messaging app, peer-to-peer and encrypted, which works without internet or servers. A nod to Hong Kong protesters and 90s IRC. A technology for crisis zones, resistant to censorship. That sums up the man well: a supporter of useful, secure, surveillance-free finance — and always, deeply decentralized.