Market Take | AI Stocks Keep Falling: Is Anthropic's $70B ARR Another Red Flag?

Hot CPI and mounting AI financing concerns triggered another brutal selloff Wednesday. The Nasdaq fell 1.9%, CoreWeave plunged over 15%, and Oracle lost nearly 9%, with weakness extending after hours.

Anthropic's latest financial disclosure adds another concern: AI demand is still booming, but growth may no longer be keeping pace with sky-high expectations.

~$70B ARR: Strong Growth, but Below the Hype

Annualizing Q3 revenue gives $67.2 billion. Based on Anthropic's previously reported $65 billion ARR at the end of July, we estimate September's exit ARR at roughly $70 billion, below the ~$80 billion investors had been watching.

More concerning is the slowdown. Quarterly revenue growth decelerated from roughly 147% in Q2 to 45% in Q3. Reaching the previously discussed $100 billion year-end ARR target would require monthly growth to reaccelerate to nearly 13%, versus an estimated 3–4% in August and September.

Another potential headwind is anti-distillation. Anthropic recently acknowledged sacrificing meaningful revenue by blocking unauthorized model distillation, with new safeguards reducing reasoning data extraction by 90–99%.

While strengthening its competitive moat, these measures could weigh on near-term revenue growth and raise questions about how much AI demand reflects sustainable end-user consumption.

$1.70 Revenue per $1 of Compute: A Major Improvement, but Good Enough?

Anthropic's unit economics have improved dramatically. According to Reuters, the company generated just $0.63 in revenue per $1 of compute and infrastructure spending in 2025, based on $4.6 billion in revenue and $7.3 billion in costs. That compares with $1.70 in Q3 2026, roughly 2.7 times higher.

The company also swung from an operating loss exceeding $8 billion in 2025 to an adjusted operating margin of approximately 11% in Q3.

For comparison, Barclays' August model estimates 48–65% paid inference margins for frontier AI labs in 2026, although the cost definitions differ.

Crowded Expectations Meet Rising Financing Costs

The real risk may be the combination of slowing growth, expensive financing, and crowded bullish expectations.

Hotter CPI has revived concerns about interest rates, while yields on some CoreWeave bonds have approached 15–16%. Even as AI revenue grows rapidly, investors are increasingly questioning whether that growth can justify massive infrastructure spending and financing costs.

Meanwhile, our poll from

suggests bullish sentiment remains remarkably resilient despite the selloff. While not direct evidence of crowded positioning, such one-sided expectations can amplify downside when results disappoint.

As borrowing costs rise and investors demand clearer returns on AI investments, highly leveraged neoclouds may face greater pressure than cash-rich hyperscalers.

The AI cycle may not be over, but the investment narrative is shifting from explosive growth to sustainable returns. Anthropic's improving economics are encouraging, yet slowing growth, financing pressures, and elevated expectations suggest the path to recovery could remain bumpy.

1