$600–$700B shift in share supply
The market has shifted from a ~$600–$700 billion net share reduction annually to effectively zero or net issuance, driven by AI CapEx funding needs.
Snapshot · Excess Returns
Andy Constan on the SpaceX IPO, AI CapEx, and the End of the Buyback Tailwind
Explore episode
Jun 16, 2026
Where this was said
From stock buybacks to new equity supply
At 24:00 · chapter starts 18:44
Andy details how buybacks reduce share supply while issuance does the opposite, and quantifies the 2023–24 baseline of ~2% of GDP in net share reduction before the current reversal. [1] — Andy Constan "Net share supply: ~2% of GDP reduction (2023–24): During 2023 and 2024, share repurchases ran at roughly 2% of GDP, representing a net redu…" 21:15
The $600–$700 Billion Structural Shift in Share Supply
The market has flipped. For years, buybacks reduced share supply by roughly 2% of GDP annually, acting as a structural tailwind. Now Google has canceled buybacks and issued $80B in stock. Meta and Amazon are following. The net swing is $600–$700 billion — entirely because AI needs to buy chips.
Net share supply: ~2% of GDP reduction (2023–24)
During 2023 and 2024, share repurchases ran at roughly 2% of GDP, representing a net reduction in share supply of about 2% of GDP.
Google canceled buyback, issued $80B stock
Google canceled its share repurchase program and then issued $80 billion of common stock, exemplifying the broader buyback-to-issuance shift driven by AI CapEx.
CapEx Is Changing Everything: One Word Explains It All
One word: CapEx. Every market anomaly — declining buybacks, surging corporate bonds, rising equity issuance, growing RSU awards — has the same root cause. Hyperscalers are burning through free cash flow, shrinking balance sheet cash, and tapping every capital source to buy chips and build data centers.
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