William Blair & Company
BLZE icon

William Blair & Company’s Backblaze BLZE Stock Holding History

William Blair & Company’s Portfolio BLZE Stock Details BLZE Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-13,194
Closed -$122K – 1873
2025
Q3 		$122K Sell
13,194
-35,000
-73% -$257K ﹤0.01% 1541
2025
Q2 		$265K Hold
48,194
– – ﹤0.01% 1304
2025
Q1 		$233K Buy
48,194
+17,500
+57% +$108K ﹤0.01% 1348
2024
Q4 		$185K Buy
+30,694
New +$208K ﹤0.01% 1447
2022
Q2 		– Sell
-13,148
Closed -$140K – 1867
2022
Q1 		$140K Buy
+13,148
New +$164K ﹤0.01% 1588

Other funds holding BLZE

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
AIC
AWM Investment Company New York $903M AUM 163.47% 1-Year Est. Return
PLC
Pillsbury Lake Capital San Francisco, California $221M AUM
WCA
Whetstone Capital Advisors Shawnee Mission, Kansas $288M AUM 44.06% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Connor, Clark & Lunn Investment Management (CC&L)
Connor, Clark & Lunn Investment Management (CC&L) Vancouver, British Columbia, Canada $43.4B AUM 51.29% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

William Blair & Company's BLZE Position: Q4 2025 in Review

William Blair & Company sold out of Backblaze (BLZE) in Q4 2025, closing a stake of 13,194 shares — an estimated $122K sold.

William Blair & Company first reported a position in BLZE in Q1 2022 and held it in 5 quarters. The position peaked at $265K in Q2 2025. 144 funds tracked by Wall St. Rank hold BLZE as of Q4 2025.

  • William Blair & Company reported no remaining Backblaze position as of Q4 2025 after selling out during the quarter.
  • William Blair & Company sold 13,194 Backblaze shares in Q4 2025, an estimated $122K.
  • William Blair & Company first reported a position in Backblaze in Q1 2022 and held it in 5 quarters.
  • William Blair & Company's Backblaze position peaked at $265K in Q2 2025.
  • 144 funds tracked by Wall St. Rank held Backblaze as of Q4 2025.

Based on William Blair & Company's 13F filing for Q4 2025, filed 17 Feb 2026.