Broadcom traded down more than 5% Friday, touching roughly $390 after opening above $411, shedding about $102 billion of market value across 4.76 billion shares. The trigger was not a guidance cut, a customer loss, or a downgrade. It was an estimate. Bank of America’s Tom Curcuruto calculated that the chip-financing vehicle standing behind Broadcom’s AI expansion could carry $370 billion of senior debt by mid-2029 at 20-gigawatt scale, including roughly $150 billion of new issuance in 2027 alone, assuming the platform grows at about two gigawatts per quarter. The number is enormous, it is not Broadcom’s debt, and the market sold the stock as though it were.

A run through the smaller stories that mattered this week.

Broadcom and Apple extend their silicon partnership through 2031. The two companies expanded their long-running custom chip relationship, with Broadcom set to develop and supply a range of custom ASIC products across multiple future generations of Apple devices. It’s a quiet but important signal: Apple continues to lean on Broadcom for specialized silicon rather than bringing every chip category in-house, and a six-year commitment gives Broadcom unusually long revenue visibility from one of its largest customers.

An index that doubles in five months does not correct gently. On Friday the KOSPI fell 5.54%, its steepest single-session drop of the year, tripping the Korea Exchange circuit breaker after KOSPI 200 futures fell 5% and program trading was suspended. The trigger was external — Broadcom’s after-hours guidance, with third-quarter AI chip sales pegged at $16 billion, read as a soft edge on the AI narrative rather than a beat. But the velocity was domestic, and it was structural. A market that rode two stocks to a 100% gain cannot fall on those two stocks without falling harder than anyone else.

The chip complex did not drift lower on Friday. It broke on a macro catalyst, and that distinction governs everything about the week ahead. The Philadelphia Semiconductor Index closed at 12,220.7, down 1,396.73 points, a 10.26 percent single-day collapse. A retracement back to the prior highs inside five sessions requires the catalyst itself to be unwound, and the catalyst was a jobs report that cannot be un-printed before the next data drop. The base case is stabilization and a partial bounce, not a clean rip to fresh records.