Some of Silicon Valley's wealthiest investors and technology founders contributed tens of millions of dollars to political committees ahead of the 2026 midterm elections, with venture capital firm Andreessen Horowitz and Blackstone's (NYSE: BX) CEO ranking among the country's biggest donors.
An analysis by SignalData of Federal Election Commission filings identified several prominent venture capital figures and technology entrepreneurs among the 50 largest federal political donors between Jan. 1, 2025, and Oct. 14, 2026.
Here are four notable names from the venture capital and technology investment ecosystem.
1. Andreessen Horowitz And Its Founders — $90.3 Million
Venture capital firm Andreessen Horowitz and its founders Marc Andreessen and Ben Horowitz ranked eighth among the largest donors, with $90.3 million in combined contributions.
The largest recipient was Leading the Future, which received $50 million, followed by Fairshake with $23.8 million and MAGA Inc. with $12 million.
The filings attribute $56 million to a16z Capital Management, $15.8 million to Andreessen and $12.8 million to Horowitz, with additional contributions recorded under related names.
2. Cameron And Tyler Winklevoss — $52.9 Million
The Gemini founders and venture capital firm Winklevoss Capital ranked 12th, with $52.9 million in combined contributions.
Their largest donations included $21.3 million to Digital Freedom Fund and $21 million to MAGA Inc. The brothers also contributed $2.2 million to the Congressional Leadership Fund and $2.1 million to NRSC Victory.
SignalData grouped contributions from the brothers and Winklevoss Capital, including $21.3 million attributed to the investment fund.
3. Stephen Schwarzman — $39.6 Million
Blackstone CEO Stephen Schwarzman ranked 22nd, with $39.6 million in reported contributions.
His largest disclosed donations included $20 million to the Senate Leadership Fund, $10 million to MAGA Inc. and $4 million to Pine Tree Results PAC.
Schwarzman's contributions also included $1.5 million to Texans for a Conservative Majority and $1 million to the Congressional Leadership Fund.
The Blackstone co-founder was among the biggest individual donors in the investment industry, with contributions spread across more than 250 additional committees.
4. Stephen And Sue Mandel — $28.7 Million
Lone Pine Capital founder Stephen Mandel and his wife, Sue, ranked 33rd, with a combined $28.7 million in contributions.
Their donations included $13.4 million to MD PAC, $7.4 million to The Bench and $3 million to Senate Majority PAC.
The couple also contributed to Democratic political organizations, including the Democratic Congressional Campaign Committee, Democratic National Committee and Democratic Senatorial Campaign Committee.
Their giving stands out among the investment executives on the list for its support of Democratic political committees.
5. Reid Hoffman And Michelle Yee — $40.9 Million
LinkedIn co-founder and venture capitalist Reid Hoffman and his wife, Michelle Yee, ranked 20th, with $40.9 million in combined contributions.
Their largest donations included $16.5 million to Lone Star Rising PAC, $8.5 million to House Majority PAC and $5.5 million to Government That Works PAC.
Hoffman, a partner at venture capital firm Greylock, accounted for $39.6 million of the total, while Yee contributed $1.3 million.
