BlackBird Beats S&P 500 by 5.5 Points, Warns on AI Spending
United States – October 31, 2026 -- BlackBird Financial returned 15.7% net of fees in the first half of 2026, beating the S&P 500's 10.2% (dividends included) by 5.5 percentage points, according to a July 30 letter to partners from Judah Spinner, CFA. All figures are as of June 30, 2026.
Builders FirstSource becomes the fund's largest holding after a market-cap slide to $7.1 billion
Builders FirstSource shares fell sharply after the fund's 2025 annual letter, as weakness in the housing market cut the company's market capitalization from $12.2 billion to $7.1 billion at its May low. Spinner added aggressively, using capital from new partners and funds reallocated from several smaller investments.
He said he did not know where the bottom was, but the fund was buying a strong business at a substantial discount to intrinsic value. He considers the risk of permanent capital impairment over a multiyear holding period exceptionally low.