BlackRock ETF filing sparks crypto surge, institutional interest

Bitcoin and other cryptocurrencies rose significantly this week following BlackRock's filing for a spot bitcoin ETF and interest from other major financial firms.
The filing reignited investor enthusiasm and pushed bitcoin above $31,000, its highest in over a year.
Other companies including WisdomTree and Invesco followed BlackRock in filing for bitcoin ETFs.
EDX Markets, a crypto exchange backed by Citadel Securities and Fidelity, launched to combine traditional finance and crypto.
Analysts say the moves show crypto's increasing maturity and mainstream acceptance.