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Livermore
Livermore
ZHEN

Rallybio Corp

RLYB
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001739410

No open-market purchases or sales by Rallybio Corp insiders were filed in the last 90 days; 37 institutions reported holding it in 13F filings for Q2 2026, worth $65.0M in total; Viking Global Investors is the only superinvestor holding it.

13F holders, Q4 2024

Institutional positions in Rallybio Corp as of Dec 31, 2024. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
49
0 vs. Q3 2024
Shares held
32.4M
+1.22M (+3.9%) vs. Q3 2024
Total value
$31.1M
−$5.39M (−14.8%) vs. Q3 2024
New holders
7
13 more added
Sold out
7
11 more reduced

Compare with Q3 2024: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting RLYB on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ4 2024: 49 institutions
Q1 2021: 0 institutionsQ2 2021: 0 institutionsQ3 2021: 34 institutionsQ4 2021: 38 institutionsQ1 2022: 47 institutionsQ2 2022: 47 institutionsQ3 2022: 53 institutionsQ4 2022: 58 institutionsQ1 2023: 53 institutionsQ2 2023: 59 institutionsQ3 2023: 58 institutionsQ4 2023: 54 institutionsQ1 2024: 62 institutionsQ2 2024: 66 institutionsQ3 2024: 49 institutionsQ4 2024: 49 institutionsQ1 2025: 47 institutionsQ2 2025: 48 institutionsQ3 2025: 45 institutionsQ4 2025: 46 institutionsQ1 2026: 38 institutionsQ2 2026: 37 institutions
Value heldQ4 2024: $31.1M
Q1 2021: $0Q2 2021: $0Q3 2021: $419.9MQ4 2021: $260.1MQ1 2022: $193.9MQ2 2022: $208.8MQ3 2022: $402.1MQ4 2022: $212.3MQ1 2023: $183.3MQ2 2023: $188.3MQ3 2023: $105.2MQ4 2023: $75.9MQ1 2024: $55.9MQ2 2024: $42.4MQ3 2024: $36.5MQ4 2024: $31.1MQ1 2025: $20.9MQ2 2025: $10.5MQ3 2025: $14.1MQ4 2025: $16.6MQ1 2026: $41.9MQ2 2026: $65.0M
Institutions holding RLYB and their total value by quarter
QuarterHoldersValue
Q2 202637$65.0M
Q1 202638$41.9M
Q4 202546$16.6M
Q3 202545$14.1M
Q2 202548$10.5M
Q1 202547$20.9M
Q4 202449$31.1M
Q3 202449$36.5M
Q2 202466$42.4M
Q1 202462$55.9M
Q4 202354$75.9M
Q3 202358$105.2M
Q2 202359$188.3M
Q1 202353$183.3M
Q4 202258$212.3M
Q3 202253$402.1M
Q2 202247$208.8M
Q1 202247$193.9M
Q4 202138$260.1M
Q3 202134$419.9M
Q2 20210$0
Q1 20210$0

Institutions, Q4 2024

Shares, value and share of portfolio for each institution holding Rallybio Corp; share changes are against Q3 2024.

Institutions holding RLYB in Q4 2024
InstitutionSharesValue% of portfolioChange in sharesAction
JPMorgan Chase & Co948$9100.00%+66+7.5%Added
BNP Paribas Arbitrage, SA1,100$1.06K0.00%+1,100New
Citigroup Inc2,447$2.35K0.00%+2,392+4,349.1%Added
Tower Research Capital LLC (TRC)3,633$3.49K0.00%+173+5.0%Added
SBI Securities Co., Ltd.5,356$5.14K0.00%+5,356New
Point72 (DIFC) Ltd5,929$5.69K0.00%−2,217−27.2%Reduced
Federated Hermes, Inc.5,991$5.75K0.00%−1,973−24.8%Reduced
Hartford Financial Management Inc.6,500$6.24K0.00%00.0%Unchanged
UBS Group AG8,359$8.02K0.00%+6,017+256.9%Added
Bank of America Corp8,738$8.39K0.00%−10.0%Reduced
Captrust Financial Advisors10,000$9.60K0.00%00.0%Unchanged
Mercer Global Advisors Inc10,000$9.60K0.00%+10,000New
Utah Retirement Systems13,240$12.7K0.00%00.0%Unchanged
ADAR1 Capital Management, LLC13,400$12.9K0.00%+100+0.8%Added
HSBC Holdings PLC14,078$13.0K0.00%00.0%Unchanged
XTX Topco Ltd14,817$14.2K0.00%+168+1.1%Added
Great Valley Advisor Group, Inc.15,000$14.4K0.00%+15,000New
Barclays PLC15,390$14.8K0.00%00.0%Unchanged
Squarepoint Ops LLC17,146$16.5K0.00%−1,218−6.6%Reduced
Point72 Asia (Singapore) Pte. Ltd.22,652$21.7K0.01%+533+2.4%Added
Engineers Gate Manager LP35,736$34.3K0.00%+35,736New
Morgan Stanley36,484$35.0K0.00%00.0%Unchanged
Wells Fargo & Company40,300$38.7K0.00%−10,000−19.9%Reduced
State Street Corp62,072$59.6K0.00%00.0%Unchanged
Northern Trust Corp73,602$70.7K0.00%+12,660+20.8%Added
Two Sigma Investments, LP76,811$73.7K0.00%−9,513−11.0%Reduced
Acadian Asset Management LLC90,247$86.0K0.00%00.0%Unchanged
Two Sigma Advisers, LP91,300$87.6K0.00%−300−0.3%Reduced
Bridgeway Capital Management, LLC91,600$87.9K0.00%00.0%Unchanged
Northeast Financial Consultants Inc96,422$92.6K0.00%+74,334+336.5%Added
BlackRock, Inc.201,219$193.2K0.00%+369+0.2%Added
Geode Capital Management, LLC247,827$238.0K0.00%+2,841+1.2%Added
Millennium Management LLC338,909$325.4K0.00%−4,035−1.2%Reduced
Mariner, LLC404,546$388.4K0.00%−1,083−0.3%Reduced
Renaissance Technologies LLC441,318$423.7K0.00%+37,618+9.3%Added
Laurion Capital Management LP735,543$706.1K0.04%00.0%Unchanged
AJU IB Investment Co., Ltd.754,678$724.5K0.71%+754,678New
Allostery Investments LP803,398$771.3K1.51%+803,398New
Vanguard Group Inc925,521$888.5K0.00%00.0%Unchanged
Almitas Capital LLC1,298,119$1.25M0.27%+422,685+48.3%Added
Canaan Partners XI LLC1,697,684$1.63M2.11%−213,303−11.2%Reduced
Standard Life Aberdeen plc1,727,067$1.66M0.00%00.0%Unchanged
FMR LLC1,766,701$1.70M0.00%−548,779−23.7%Reduced
Pivotal bioVenture Partners Investment Advisor LLC2,404,644$2.31M1.56%00.0%Unchanged
TPG GP A, LLC3,028,414$2.91M0.05%00.0%Unchanged
New Leaf Venture Partners, L.L.C.3,301,603$3.17M4.24%00.0%Unchanged
5AM Venture Management, LLC3,630,724$3.49M0.83%00.0%Unchanged
Johnson & Johnson3,636,363$3.49M0.90%00.0%Unchanged
Viking Global Investors LPSuperinvestorViking Global Investors4,194,777$4.03M0.01%00.0%Unchanged
Susquehanna International Group, LLP0$00.00%−92,333−100.0%Sold out
Jane Street Group, LLC0$00.00%−22,275−100.0%Sold out
HarbourVest Partners LLC0$00.00%−21,877−100.0%Sold out
Dimensional Fund Advisors LP0$00.00%−21,203−100.0%Sold out
Qube Research & Technologies Ltd0$00.00%−10,664−100.0%Sold out
Catalyst Funds Management Pty Ltd0$00.00%−7,800−100.0%Sold out
Russell Investments Group, Ltd.0$00.00%−1,049−100.0%Sold out