2026-Q1 JANE STREET GROUP, LLC 13F Filing: Jane Street adds +$34.15B to SPY in Q1

JANE STREET GROUP, LLC filed its 13F report with the SEC for the first quarter of 2026 on May 15, 2026, detailing significant portfolio activity across 6,792 positions.

Quick Reference

Q: What is JANE STREET GROUP's biggest holding in its 2026-Q1 13F filing? A: SPY is JANE STREET GROUP's largest disclosed position in the 2026-Q1 filing, representing 16.73% of the total portfolio. The fund added to the SPDR S&P 500 ETF Trust during the quarter, increasing its market value to $130.01B.

Q: Did JANE STREET GROUP buy or sell NVDA in the 2026-Q1 quarter? A: JANE STREET GROUP trimmed its NVIDIA (NVDA) position in Q1 2026, actively reducing its share count. The trim lowered the portfolio weight from 5.72% to 4.19% and brought the position's value to $32.55B.

Q: How much did JANE STREET GROUP increase its GLD position in Q1 2026? A: JANE STREET GROUP added substantially to its GLD holdings in the first quarter, increasing the value by +$12.03B. The move pushed GLD's portfolio weight from 3.10% to 4.19%.

Q: Did JANE STREET GROUP buy shares of MU in the 2026-Q1 period? A: Yes, JANE STREET GROUP aggressively added to Micron Technology (MU) in Q1 2026, nearly doubling the position's market value to $15.10B. The stake's portfolio weight climbed from 1.09% to 1.94%.

Q: How did JANE STREET GROUP's portfolio turnover compare in 2026-Q1? A: JANE STREET GROUP's turnover ratio for Q1 2026 was 0.339, reflecting an actively traded quarter. Information Technology remained the largest sector weighting at 44.7 percent, with Consumer Discretionary at 16.88 percent.

Q: What's the easiest way to track JANE STREET GROUP's future filings? A: The simplest way to monitor JANE STREET GROUP's trading activity is to check their next quarterly 13F filing, expected around 45 days after the close of the next quarter.