IREN Falls 7% as Financing-Heavy Data Center Names Sell Off Apart From Their Sector Fund; TeraWulf and Core Scientific Drop 5%

Rising borrowing costs hit data center companies hardest. Those still raising money to build capacity for artificial intelligence (AI) customers include three stocks falling much harder than their sector fund.

Shares of IREN Limited (NASDAQ:IREN) are down 7% to $38.57 in afternoon trading, the largest decline of the three. At the same time, TeraWulf (NASDAQ:WULF) stock is falling 5% to $14.20, following IREN stock lower.

Core Scientific (NASDAQ:CORZ) shares are sliding 5% to $15.81, almost exactly matching the decline in TeraWulf stock. Meanwhile, the Global X Data Center & Digital Infrastructure ETF (NASDAQ:DTCR) is down only 0.4% to $27.66, so all three stocks are trailing their sector benchmark several times over.

Capital-Hungry Builders Absorb the Rate Pressure

The SPDR S&P 500 ETF Trust (NYSEARCA:SPY) is down just 0.3% to $776.85, so the broad market does little to explain the selling in IREN, TeraWulf and Core Scientific shares. IREN stock is sliding without any fresh headlines from the company, and DTCR’s small dip gives the move little cover.

Timing is what sets IREN, TeraWulf and Core Scientific apart from most of DTCR’s holdings. All three companies are adding capacity ahead of revenue. They’re using capital that still has to be raised, and that leaves them more exposed to financing costs than an operator already collecting rent on finished buildings. Borrowing benchmarks have moved against that model, with the 10-year Treasury yield at 5.3% on October 5, its highest reading in a month.

TeraWulf stock is still up 24% year to date (YTD), and Core Scientific shares are up 9% over the same stretch. By comparison, IREN stock is up just 2% YTD, which leaves IREN stock with the smallest buffer.

IREN’s Power Edge Meets Its Funding Bill

IREN is building its Sweetwater campus in Texas to 2 GW of planned gross power capacity across two phases, according to IREN Limited. Kiowa and IREN’s other planned developments are set to reuse the liquid-cooled design created at Sweetwater, so the same layout can support successive generations of graphics processors.

Management at IREN has stated its recent three-year contracts are generating well above $20 million per information technology megawatt, with discussions running higher. Contractual commitments at IREN reached $13.81 billion as of the end of its latest quarter, which shows how much the expansion has already obligated, according to IREN Limited.

On the bullish side, IREN controls the rarest input in this business (power at scale with a grid connection attached), and its contract pricing has been rising. A bearish reading holds that IREN’s planned capacity still has to become revenue and that its expansion needs capital on terms that just got more expensive. Existing IREN shareholders also carry dilution risk in their holdings if the company raises that capital through equity.

What to Watch Next

The selling comes down to the gap between IREN’s planned power capacity and its contracted compute. Investors should watch for new contracts that turn Sweetwater’s planned capacity into revenue-producing compute at IREN. Each signed lease narrows that gap for IREN, and each equity raise sharpens the dilution question.

TeraWulf and Core Scientific face the same test, since both companies are paying for capacity before the revenue it’s meant to produce arrives. The suppliers behind these buildouts offer another angle. Power, cooling, and networking suppliers are a separate way to play the same trend, and we rounded up seven of them in a free AI infrastructure report. Traders could reduce their share positions and look for signs that borrowing costs are falling before the market rewards the expansion stage at TeraWulf, Core Scientific or IREN again.

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