Founders Fund has completed its largest-ever fundraising, raising $6 billion.

BlockBeats News, May 3rd, according to Bloomberg, a source revealed that Silicon Valley's top investor Peter Thiel's venture capital fund Founders Fund has raised $6 billion to invest in late-stage companies, marking its largest fundraising in history.

Most of the funds, $4.5 billion, come from limited partners, including sovereign wealth funds. A source said the remaining $1.5 billion is from Founders Fund's senior management and employees, including Peter Thiel himself.

The fund's fourth growth-stage investment fund was quickly assembled shortly after the launch of the previous fund, making it the fastest fund transition in Founders Fund's twenty-year history. The rapid launch of a larger fund reflects the increasing demand for massive funding by mature-stage startups, which are increasingly opting to raise funds from private investors rather than the public markets.

Other venture capital firms are also raising billions of dollars for late-stage investments, in part because tech companies need more funds to afford expensive computing resources. For example, Sequoia Capital recently raised about $7 billion for a new fund to increase its investments in large companies; Thrive Capital also raised a fund of up to $10 billion, its largest ever.