In February, the public software market erased $285 billion in value in 48 hours. That slide has largely continued over the course of the year, with fears of AI displacement overtaking fundamental analysis. The median public SaaS company now trades at 3.2 to 3.4x revenue, most with double digit revenue growth, down from 6.2x two years ago — a decade low. Over that same window, private SaaS valuations barely moved. They're still sitting around 4x to 10x ARR, roughly where they've been for the better part of a year.

The instinct is to read that as private markets being the more stable, more rational side of the software business — a calmer counterpoint to a public market prone to overreaction. I don't think that's the right read. I think private markets aren't calmer, they're just slower to find out and accept reality.

How a private valuation actually gets set

Here's the part that's easy to forget if you're not inside a venture fund: a private company's valuation isn't a live number. It's set once, at the moment of a funding round, and it sits there — unchanged on paper — until either a new round or an exit forces a fresh mark. A company that raised at a certain multiple in 2021 can, technically, still carry that same multiple on paper today. Three years and several market cycles later, simply because nothing has happened to require an update.

Public markets don't get that luxury. Every share that trades resets the price, all day, for every company, whether the news is good or the news is bad. When AI-agent disruption fears and a run of soft earnings outlooks hit in February, the public market didn't get to wait and see. It repriced $285 billion of software value in two days.

VCs already know their own marks are stale

The clearest evidence that private valuations lag reality isn't public commentary, it's what fund managers do to their own portfolios. On average, venture funds hold their companies at a 23% discount to the last round's price. The most conservative managers discount by as much as 41%. That's not a correction driven by bad news about any specific company. It's a standing adjustment, applied across the board, to compensate for a mark everyone already knows is out of date the moment it's set.

Think about what that means. A fund isn't just uncertain about whether a company is worth what it raised at. It's already assuming the honest answer is somewhat less — before any new information arrives to justify the discount. The stale mark isn't neutral. It's quietly, structurally, a little too generous by default.

Where the two markets actually meet

The moment a private mark gets tested against reality is the moment a company needs to raise again. That's when the gap between "what the last round said" and "what the market will pay right now" becomes impossible to paper over.

This is exactly what's playing out with the 2021 vintage. Companies that raised growth rounds in 2021 at 30 to 40x ARR are coming back to market now, and the multiple they can actually get is closer to 10x to 15x — even for companies that have tripled revenue since. On paper, that reads like a catastrophic down round. In reality, it's a company's valuation finally catching up to where the market has been for a while. The mark wasn't dishonest in 2021, it just never had a reason to move until now.

Private markets in the earliest stages are inherently optimistic by design. They value companies on SAFE notes without any fundamentals, because fundamentals often don't exist at that stage. It's priced on what it could become.

So which market has it right?

Public markets aren't necessarily more rational in any given moment — a 48-hour, $285 billion swing has plenty of overreaction baked into it, and public software investors have been wrong before, in both directions. But they're doing something private markets structurally can't: pricing new information as it arrives, continuously, without the option to look away.

Private markets aren't wrong so much as they're behind. Pricing an old version of the world, discounted by however much the person holding the mark is willing to admit that's true. That's a reasonable way to run fund accounting. It's a dangerous way to think about what your company, or your portfolio, is actually worth right now.

The next time someone quotes you a private SaaS multiple, the more useful question isn't whether it's higher or lower than the public comp. It's how long it's been since that number was actually tested.