Data shows that the value of later-stage startups is declining.

The scale of the contraction is worth noting, even though this market movement isn't a surprise. According to the Financial Times, the prices of companies on the Forge Global platform had fallen in February and March compared with the fourth quarter of last year.

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The general price movement for late-stage unicorns has been confirmed by other data.

Secondary data should not be used to set public market prices. Before it listed last year, it was valued at more than $100 billion on secondary markets. The company's value is about $38.6 billion, a sharp discount from the 12 figures it once commanded.

That caveat aside, a decline of a fifth is material, and provides more evidence that what Instacart went through earlier this year could prove to be more harbinger of what’s to come than a one-off datapoint.

How big is a 20% haircut?

The data from Carta was looked into by TechCrunch in March. The company has a lot of data from startup actively raising money. Shrinking round sizes and valuations were shown in its data.

The average deal size at the Series C mark in January and February was off 23% compared to the last two months of the previous year, and valuations fell 47% on average. We will get updated data from Carta this week, if possible, to provide a clearer picture of Q1.