Citadel Advisors
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Citadel Advisors’s Sera Prognostics SERA Stock Holding History

Citadel Advisors’s Portfolio SERA Stock Details SERA Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$75.4K Sell
41,411
-207,498
-83% -$412K ﹤0.01% 12878
2026
Q1 		$505K Sell
248,909
-458,705
-65% -$1.18M ﹤0.01% 9277
2025
Q4 		$2.09M Buy
707,614
+53,868
+8% +$174K ﹤0.01% 5827
2025
Q3 		$2M Buy
653,746
+24,739
+4% +$70.5K ﹤0.01% 6064
2025
Q2 		$1.74M Buy
629,007
+1,600
+0.3% +$3.96K ﹤0.01% 5969
2025
Q1 		$2.31M Buy
627,407
+627,343
+980,223% +$3.2M ﹤0.01% 5263
2024
Q4 		$521 Buy
+64
New +$470 ﹤0.01% 14315
2024
Q3 		– Sell
-109,157
Closed -$646K – 15134
2024
Q2 		$646K Buy
+109,157
New +$976K ﹤0.01% 7503
2023
Q3 		– Sell
-12,087
Closed -$39.8K – 15020
2023
Q2 		$39.8K Sell
12,087
-8,516
-41% -$29.2K ﹤0.01% 12071
2023
Q1 		$78.9K Buy
+20,603
New +$54.1K ﹤0.01% 11580
2022
Q4 		– Sell
-12,558
Closed -$20K – 15395
2022
Q3 		$20K Buy
+12,558
New +$25.3K ﹤0.01% 12076
2022
Q1 		– Sell
-21,872
Closed -$151K – 14469
2021
Q4 		$151K Sell
21,872
-35,091
-62% -$353K ﹤0.01% 12243
2021
Q3 		$633K Buy
+56,963
New +$591K ﹤0.01% 9300

Other funds holding SERA

BBA
Baker Bros. Advisors New York $20B AUM 154.41% 1-Year Est. Return
WCA
Whetstone Capital Advisors Shawnee Mission, Kansas $380M AUM 20.01% 1-Year Est. Return
Aberdeen Group
Aberdeen Group Edinburgh, United Kingdom $71.2B AUM 41.74% 1-Year Est. Return
VC
Vivo Capital Palo Alto, California $1.1B AUM 799.93% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
CAPTRUST Financial Advisors
CAPTRUST Financial Advisors Raleigh, North Carolina $65.5B AUM 24.25% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
AIC
AWM Investment Company New York $1.15B AUM 201.65% 1-Year Est. Return
Vanguard Fiduciary Trust
Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM

Citadel Advisors's SERA Position: Q2 2026 in Review

Citadel Advisors reduced its Sera Prognostics (SERA) stake by 83% in Q2 2026, selling an estimated $412K and leaving 41,411 shares worth $75.4K. The position accounts for ﹤0.01% of the portfolio, ranked #12878.

Citadel Advisors first reported a position in SERA in Q3 2021 and has held it in 13 quarters since. The position peaked at $2.31M in Q1 2025. 46 funds tracked by Wall St. Rank hold SERA as of Q2 2026.

  • Citadel Advisors held 41,411 shares of Sera Prognostics worth $75.4K as of Q2 2026.
  • Citadel Advisors sold 207,498 Sera Prognostics shares in Q2 2026, an estimated $412K.
  • Sera Prognostics made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #12878 holding.
  • Citadel Advisors first reported a position in Sera Prognostics in Q3 2021 and has held it in 13 quarters since.
  • Citadel Advisors's Sera Prognostics position peaked at $2.31M in Q1 2025.
  • 46 funds tracked by Wall St. Rank held Sera Prognostics as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.