Illustration for: Markets Slide as Oil, Bond Yields Jump on Iran Risk

Markets Slide as Oil, Bond Yields Jump on Iran Risk

US stock futures fell Tuesday as bond yields and oil prices climbed to multi-year highs after President Trump declined to extend the expiring US-Iran ceasefire, a macro backdrop that sits underneath every tech valuation on this page.

By the Numbers

-1.1%
Nasdaq 100 futures
-0.5%
S&P 500 futures
~$63K-$64K
Bitcoin
-$390M
Prior-week BTC ETF flow
TC
By the Markets Desk
Edited by Trace Cohen · Early-stage VC & angel · Founder, New York Venture Partners
1 min read
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THE RUNDOWN

1

Nasdaq 100 futures dropped 1.1% and S&P 500 futures fell 0.5% as of early Tuesday trading, per [Bloomberg](https://www.bloomberg.com/news/articles/2026-08-18/us-stock-index-futures-drop-as-bond-yields-oil-prices-rise)

2

Oil ticked higher as prospects for extending the 60-day US-Iran truce receded, with President Trump saying he is not interested in extending the expiring agreement

3

Bitcoin has held near $63,000-$64,000 this week after a soft prior week that saw spot bitcoin ETFs record $390 million in net outflows

4

The move matters for every AI valuation on this page: higher bond yields raise the discount rate applied to the long-duration revenue growth that private AI companies trading at 20x to 40x forward revenue depend on.

TC

The VC Read · Trace's Take

Trace Cohen

This is the chart every LP should glance at before signing off on a growth-round term sheet this month: a 40-basis-point move in yields does more to a 30x-revenue private valuation than most operating updates a portfolio company will send this quarter. It doesn't change my underwriting on any specific deal, but it's the reminder that every AI mega-round priced this month is implicitly a bet that rates stay roughly where they are through the exit.

Analysis

US stock futures fell Tuesday morning as bond yields and oil prices climbed to multi-year highs, with Nasdaq 100 futures down 1.1% and S&P 500 futures off 0.5% as of early trading, according to Bloomberg. The immediate trigger is geopolitical: President Trump said he is not interested in extending the expiring 60-day US-Iran ceasefire, reviving concerns over supply disruption that pushed oil prices higher across the session.

The move is worth pausing on for what it means to every valuation elsewhere on this page. A private AI company trading at 20x to 40x forward revenue -- the range Databricks, Cognition and Lovable are all clustered around this month -- is being priced almost entirely on the promise of future cash flows many years out. Rising bond yields raise the discount rate applied to those future cash flows, which mechanically compresses what any given growth rate is worth today, regardless of whether the underlying business changes at all.

The move is worth pausing on for what it means to every valuation elsewhere on this page.

Crypto is showing the same risk-off tone at smaller scale: bitcoin has held in the $63,000-to-$64,000 range this week after spot bitcoin ETFs recorded $390 million in net outflows the prior week, and spot ether ETFs showed no net inflows either direction -- a market waiting for a catalyst rather than actively repricing higher.

None of this is a crisis-level move by historical standards, and none of it changes the revenue Anthropic, Databricks or any other company on this page actually generated this quarter. It is the macro backdrop private-market marks tend to ignore until a public listing forces the comparison -- which is exactly the test Anthropic's prospective $2-3 trillion IPO valuation will face if yields keep climbing into October.

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Key Sources

2 sources

Reported by Bloomberg · Analysis by Value Add Pulse.

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