Fidelity Investments’s BillionToOne Inc BLLN Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
Sell
-700
Closed -$57.3K 5650
2025
Q4
$57.3K Buy
+700
New +$71K ﹤0.01% 4037

Other funds holding BLLN

Fidelity Investments's BLLN Position: Q1 2026 in Review

Fidelity Investments sold out of BillionToOne Inc (BLLN) in Q1 2026, closing a stake of 700 shares — an estimated $57.3K sold.

Fidelity Investments first reported a position in BLLN in Q4 2025 and held it in 1 quarter. The position peaked at $57.3K in Q4 2025. 91 funds tracked by Wall St. Rank hold BLLN as of Q1 2026.

  • Fidelity Investments reported no remaining BillionToOne Inc position as of Q1 2026 after selling out during the quarter.
  • Fidelity Investments sold 700 BillionToOne Inc shares in Q1 2026, an estimated $57.3K.
  • Fidelity Investments first reported a position in BillionToOne Inc in Q4 2025 and held it in 1 quarter.
  • Fidelity Investments's BillionToOne Inc position peaked at $57.3K in Q4 2025.
  • 91 funds tracked by Wall St. Rank held BillionToOne Inc as of Q1 2026.

Based on Fidelity Investments's 13F filing for Q1 2026, filed 15 May 2026.