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Round Rock Advisors’s Cerus CERS Stock Holding History

Round Rock Advisors’s Portfolio CERS Stock Details CERS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$1.04M Buy
355,962
+90,996
+34% +$221K 0.13% 115
2026
Q1 		$482K Buy
264,966
+241
+0.1% +$525 0.07% 196
2025
Q4 		$545K Buy
+264,725
New +$459K 0.08% 185

Other funds holding CERS

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
AIM
ARK Investment Management St. Petersburg, Florida $15.4B AUM 50.29% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
BBA
Baker Bros. Advisors New York $20B AUM 154.41% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
SM
Senvest Management New York $3.41B AUM 66.27% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $175B AUM 40.63% 1-Year Est. Return

Round Rock Advisors's CERS Position: Q2 2026 in Review

Round Rock Advisors increased its Cerus (CERS) stake by 34% in Q2 2026, buying an estimated $221K and bringing the position to 355,962 shares worth $1.04M. The position accounts for 0.13% of the portfolio, ranked #115.

Round Rock Advisors first reported a position in CERS in Q4 2025 and has held it in 3 quarters since. 186 funds tracked by Wall St. Rank hold CERS as of Q2 2026.

  • Round Rock Advisors held 355,962 shares of Cerus worth $1.04M as of Q2 2026.
  • Round Rock Advisors bought 90,996 Cerus shares in Q2 2026, an estimated $221K.
  • Cerus made up 0.13% of Round Rock Advisors's portfolio in Q2 2026, its #115 holding.
  • Round Rock Advisors first reported a position in Cerus in Q4 2025 and has held it in 3 quarters since.
  • 186 funds tracked by Wall St. Rank held Cerus as of Q2 2026.

Based on Round Rock Advisors's 13F filing for Q2 2026, filed 12 Aug 2026.