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Of the 6 tracked institutions holding RLYB, 3 have a 3-year clone track record — 3 of them beat the S&P. Average holder's clone alpha: +6.5pt. It's a gauge of who owns the name, not just how many.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
Among the 6 tracked institutional investors we monitor, RLYB (RALLYBIO CORP) is held with a combined value of $14.26M across 2,527,946 shares. The largest holder is FMR LLC with a position worth $7.12M. 5 funds opened new positions in the most recent quarter. 1 fund increased its holdings.
Total Institutional Value
$14.26M
Total Shares Held
2,527,946
Institutional Holders
6
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | FMR LLC | $7.12M | 0.00% | New |
| 2 | VIKING GLOBAL INVESTORS LP | $4.70M | 0.01% | New |
| 3 | RENAISSANCE TECHNOLOGIES LLC | $1.40M | 0.00% | New |
| 4 | VANGUARD GROUP INC | $697.15K | 0.00% | +1.7% |
| 5 | CITADEL ADVISORS LLC | $178.38K | 0.00% | New |
| 6 | BlackRock, Inc. | $156.85K | 0.00% | New |
As of the latest SEC 13F filings, FMR LLC is the largest institutional holder of RLYB with a position worth $7.12M, representing 0.00% of their portfolio. In total, 6 institutional investors hold RLYB with a combined value of $14.26M.
In the most recent quarter, 5 funds opened a new position in RLYB. Additionally, 1 increased their holdings.
Institutional investors hold $14.26M worth of RLYB stock across 6 positions. The largest institutional holder is FMR LLC with $7.12M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For RLYB, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their RLYB positions.
None this quarter.
Last Close
$16.31
2026-07-24
YTD
+188.2%
95% of 52-week range
