The $18 billion MSCI threat hanging over MicroStrategy and bitcoin

MicroStrategy’s aggressive bitcoin strategy has turned the company into a proxy BTC play for many traditional investors. But new index rules from MSCI could pull a key support out from under its stock – and indirectly weaken one of the largest corporate bitcoin buying machines on the market.

What MSCI changed – and why it matters

MSCI is one of the world’s most important index providers. Its indices are tracked by huge amounts of passive money – from ETFs to pension funds – that simply buy whatever the index holds. When MSCI changes its rules, billions of dollars can be forced to rebalance.

On 15 October, MSCI approved new rules that draw a much sharper line between:

• Operating companies that run a real business, and
• Investment vehicles that mostly just hold assets, like bitcoin.

MSCI’s goal is clear: it wants genuine operating companies in its indices, not de facto funds masquerading as operating businesses. That’s a problem for MicroStrategy, whose balance sheet is now dominated by BTC.

The digital asset focus and the “gateway test”

MSCI first put a temporary stopgap in place back in October 2023, targeting companies where 50% or more of their assets were digital assets. After a consultation in August, the new permanent framework was signed off in mid-October.

Under this framework, MSCI doesn’t just look at how much bitcoin a company holds. It asks a deeper question: is this still primarily an operating business, or has it effectively become an investment vehicle for holding BTC?

The first hurdle is the so-called “gateway test”. This looks at whether the operating business is big enough to actually count as the core business. In MicroStrategy’s case, the company still has its legacy software segment, but according to its own filings, that software arm now represents just around 0.9% of total assets. Almost everything else on the balance sheet is bitcoin.

From MSCI’s perspective, that makes the software business look like a footnote attached to what is, in practice, a bitcoin treasury.

How MicroStrategy fails most of MSCI’s tests

The gateway test is only the beginning. MSCI’s new framework uses five tests to decide whether a company is an operating business or an investment vehicle. MicroStrategy was flagged on four of the five tests in both 2024 and 2025 (with the fifth, a fair value test, still under dispute).

Those four red flags all point in the same direction:

• Tiny operating assets: The software business is extremely small relative to MicroStrategy’s bitcoin holdings.
• Low operating spend: A small software business doesn’t require much to run, so operating expenses are minor next to the BTC balance sheet.
• Negative operating cash flow: In both 2024 and 2025, cash flow from operations was negative – the core business is not paying the bills.
• Reliance on fundraising: Major moves are funded by issuing new securities, not by profits from the software business.

MicroStrategy’s counter-argument is that running and financing a bitcoin treasury is its business. MSCI, however, sees something that looks much more like an investment vehicle, which is why it’s considering removing MicroStrategy from its indices.

What removal from MSCI indices actually means

If MSCI goes ahead, it’s important to be clear about what does – and does not – happen.

• MicroStrategy stock (MSTR) would not be delisted from NASDAQ. Anyone can still buy and sell it as usual.
• There is no forced bitcoin selling tied directly to MSCI’s decision.
• The change only affects inclusion in MSCI indices – but that’s still a big deal because of how much passive money tracks those benchmarks.

MicroStrategy isn’t alone. Other companies like Metanet and Sharlink are also caught up in the same classification debate. But MicroStrategy is by far the largest and most visible BTC-heavy name in this group, so its fate carries the biggest market impact.

Why index funds are so important for MSTR

To understand why this matters, you have to look at how MicroStrategy finances its bitcoin buying. The company runs a loop:

1. Raise money from investors (mostly by issuing shares or preferred stock).
2. Use that money to buy more BTC.
3. Repeat.

A big part of this loop relies on an “at-the-market” (ATM) program. This allows MicroStrategy to slowly sell new MSTR shares directly into the market at prevailing prices. Its most recent bitcoin purchases were funded almost entirely by shares sold via this ATM program.

This model works best when MSTR trades at a premium to the value of the bitcoin backing each share. That ratio is often called market value to net asset value, or MNAV:

• When MNAV > 1, each new share sold brings in enough cash to buy more BTC than it dilutes, increasing the amount of bitcoin per share.
• When MNAV < 1, issuing new shares just dilutes existing holders without growing BTC per share.

The whole loop depends on a steady pool of buyers willing to buy MSTR, ideally at a premium. Some of the most reliable buyers are index funds, which hold MSTR simply because it sits in their benchmark – they don’t have an opinion on bitcoin or MicroStrategy’s strategy. They just follow the rules.

If MSCI removes MicroStrategy from its indices, that passive buyer base disappears.

The $1.8 billion selling threat

By MicroStrategy’s own estimate, funds linked to MSCI indices currently hold around 13 million MSTR shares. At recent prices, that’s roughly $1.8 billion worth of stock – about 60% of a normal day’s trading volume in MSTR.

When MSCI’s changes take effect, those funds would be forced to sell their holdings as they rebalance into the updated indices. The sales themselves don’t take money out of MicroStrategy’s bank account – shares just change hands between investors. But the impact shows up elsewhere:

• Selling pressure can weaken demand for MSTR.
• A weaker or disappearing premium makes it harder and more expensive to raise new capital via the ATM program.
• That, in turn, makes it more costly for MicroStrategy to keep buying more bitcoin.

In other words, MSCI doesn’t have to touch MicroStrategy’s BTC to make bitcoin accumulation more expensive for the company. It only needs to disrupt the stock demand that powers the loop.

How MicroStrategy is already shifting its spending

Recent filings suggest this pressure may already be influencing how MicroStrategy allocates capital. In an 8-K filed on 19 October, the company disclosed that it:

• Bought 267 BTC for around $22 million.
• Spent about $193 million repurchasing STRC, one of its preferred stock securities.

These preferred shares are dividend-paying instruments that MicroStrategy issues to raise money – ultimately to buy more bitcoin. But now the company is using a large chunk of cash to buy those securities back.

Looking over the prior three weeks, the pattern becomes clearer:

• Around $561 million went into buying back STRC.
• Only about $72 million went into new BTC purchases.

That’s nearly $8 spent supporting its own financing structure for every $1 spent on bitcoin. On top of that, the board recently raised the buyback authorization for these securities from $2 billion to $3 billion.

The takeaway: MicroStrategy is now spending most of its cash on stabilising and supporting its own funding instruments, rather than aggressively “stacking sats”. That’s exactly the kind of shift that a weaker MSTR premium – and potential MSCI exclusion – can force.

Could MSCI force MicroStrategy to sell bitcoin?

MSCI’s decision, by itself, does not force MicroStrategy to sell any BTC. The direct impact is on the stock, as index funds rebalance out of MSTR. Bitcoin only feels the effect indirectly:

• If it becomes harder or more expensive to issue new shares at a premium, MicroStrategy has less cheap capital available to buy more BTC.
• If the company needs cash to support its preferred stock, buybacks, or other obligations, it may eventually need to tap its largest asset – its bitcoin holdings.

So the real risk is not a mandated BTC liquidation, but a financial squeeze. If raising money through MSTR becomes more difficult, MicroStrategy has fewer easy options, and its BTC stack becomes the obvious fallback. That’s what worries many bitcoin investors who see MicroStrategy as a long-term, one-way accumulator.

For a broader look at how MicroStrategy’s approach fits into the wider BTC landscape, it’s worth reading our breakdown of what BlackRock’s bitcoin selling and MicroStrategy’s strategy really mean for BTC.

Key dates and what to watch

The timeline for MSCI’s decision is already locked in:

• 11 November: MSCI publishes its final deletion list. This is when MicroStrategy will know for sure whether it’s out.
• 30 November (after the close): Any approved deletions take effect. This is when index funds must have completed their selling and rebalancing.
• 1 December: The revised indices go live with their new compositions.

Every MSTR share sold via the ATM between now and then, and every dollar channelled into preferred stock buybacks instead of BTC, is happening under the shadow of that upcoming deletion list.

Traders watching this story may also want to consider how equity and crypto markets interact around major macro events and flows. For example, understanding how to trade bitcoin and stocks around FOMC days can help frame how broader risk sentiment might amplify or dampen any MSCI-driven volatility.

What it could mean for bitcoin

MicroStrategy has become one of bitcoin’s most visible corporate champions and one of its largest buyers. Anything that slows its ability to accumulate BTC, or increases the odds it might one day sell, matters for the wider market.

If MSCI removes MSTR from its indices, the immediate shock will likely be in the stock, not in BTC itself. But over time, a weaker MicroStrategy premium and tighter financing conditions could mean:

• Less incremental demand from one of bitcoin’s biggest corporate buyers.
• A higher chance that, under stress, MicroStrategy may need to monetise some of its BTC to meet obligations or support its capital structure.

On the other hand, if MicroStrategy manages to maintain demand for its shares and keep the premium healthy even after a potential MSCI exit, its bitcoin strategy could continue largely unchanged – just with a more volatile and complex funding backdrop.

For now, the market is waiting for MSCI’s final call in November. The outcome will not only shape MicroStrategy’s future, but also send an important signal about how traditional index providers plan to treat publicly listed companies that go all-in on bitcoin.