Investors are ditching the largest tech ETF at the fastest pace in 20 years.

The $122 billion Invesco QQQ Trust Series 1 (QQQ) exchange-traded fund suffered its biggest daily outflow since October 2000, losing almost $3.5 billion on Friday, according to data compiled by Bloomberg.

The tech-heavy fund, which tracks the Nasdaq 100, is suffering outflows after the sector’s massive rally over the past few months. The index just faced a third weekly loss and is on track for its worst month since 2008, a turnaround spurred by lofty valuations, persistent unemployment and a congressional stalemate on further stimulus.

“There is more of a concern that in equity markets we shouldn’t be priced to perfection anymore,” said Brian Nick, chief investment strategist at Nuveen. “That’s the pullback you’re really seen, especially with the stocks with the higher valuations.”

At the same time, there’s also evidence that some risk-tolerant traders are seeking to position themselves for a quick reversal in fortune, piling into a triple-leveraged version of QQQ that’s become popular among day traders. The $7.9 billion ProShares UltraPro QQQ (TQQQ) notched a third straight week of inflows.

While tech slumps, sectors that had suffered the most during the height of the U.S. pandemic lockdown are outperforming. State Street’s Industrial Select Sector SPDR Fund (XLI) saw its best weekly inflow since June last week, while the firm’s Technology Select Sector SPDR Fund (XLK) had its worst since January.

“Industrials, materials and the transportation companies started to outpace the broader market months ago, and those cyclical factors still have the most momentum, even in this selloff,” said James Pillow, managing director at Moors & Cabot Inc.