FORTUNE -- Armchair CEOs, eyeing Apple's (AAPL) growing mountain of cash and marketable securities, have urged it over the years to buy everything from Facebook (FB) and Yahoo (YHOO) to Sony (SNE), Adobe (ADBE) and Disney (DIS).
Last quarter, Apple finally made a major acquisition. And what did it buy?
It bought Apple.
By my (revised) calculation, the company spent $16 billion last quarter ($4 billion in cash, $12 billion through the so-called accelerated share repurchase program) to purchase 32.5 million of its own shares at an average price of about $492.
Most of those shares -- about 22 million -- were retired in fiscal Q3, leaving Apple with 908 million shares outstanding, according to its latest 10-Q. The rest will be retired in Q4.
UPDATE: Dediu has taken a crack at nailing down these somewhat fuzzy numbers. He gets an average per share price of $488.25. See Apple's biggest acquisition.
UPDATE 2: The spreadsheet above was revised to reflect the commentary below by readers who clearly understand better than I do the mechanics of share repurchase programs.
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