RLAY vs RLYB

Relay Therapeutics, Inc. vs Rallybio Corporation — Valuation Comparison 2026

By CirclFi Research Team · Updated 2026-06-03 · Data from SEC EDGAR, FRED & GDELT

Quick Summary — RLAY scores higher on quality with 6.0/10 vs RLYB's 5.4/10. RLAY trades at $15.70 while RLYB trades at $16.23. Both analyzed daily using SEC EDGAR data across 13 institutional models.

RLAY

Biotechnology
Relay Therapeutics, Inc.
Quality
6.0
out of 10
Value Trap
18
SAFE
Price
$15.70
Last close
Models
12/13
Active
VS

RLYB

Biotechnology
Rallybio Corporation
Quality
5.4
out of 10
Value Trap
24
SAFE
Price
$16.23
Last close
Models
9/13
Active
RLAY
2 models active
Limited to 2/13 visible models
RLYB
2 models active
Limited to 2/13 visible models

RLAY vs RLYB — Fair Value Comparison

RLAY
$0$6$12$19 Price$15.70 Bayesian …$5.14 (-67.3%) Earnings …$7.19 (-52.5%)
RLYB
$0$6$13$19 Price$16.23 Bayesian …$8.16 (-49.7%) Dynamic N…$16.04 (-1.2%)
Market Price Model 1 Model 2

Model-by-Model Comparison

ModelType RLAY Fair ValueRLAY Upside RLYB Fair ValueRLYB Upside
Bayesian DCF Intrinsic $5.14 -67.3% $8.16 -49.7%
Earnings Power Value Intrinsic $7.19 -52.5%
EROIC Spread Intrinsic $•••.•• ••.•% $•••.•• ••.•%
First Chicago Scenario $•••.•• ••.•% $•••.•• ••.•%
Markov DDM Intrinsic $•••.•• ••.•% $•••.•• ••.•%
ML-RIV Intrinsic $•••.•• ••.•% $•••.•• ••.•%
Dynamic NAV Asset-Based $3.48 -77.8% $16.04 -1.2%
PWERM Option-Based $•••.•• ••.•% $•••.•• ••.•%
Regime Cross-Sectional Relative $•••.•• ••.•% $•••.•• ••.•%
Sentiment SOTP Hybrid $•••.•• ••.•% $•••.•• ••.•%
CUCE Ensemble Ensemble $•••.•• ••.•% $•••.•• ••.•%
FTNN Topology Relative $•••.•• ••.•% $•••.•• ••.•%

RLAY vs RLYB — Which Stock Is More Undervalued in 2026?

RLAY scores higher with a 6.0/10 quality rating vs RLYB's 5.4/10. Both stocks are analyzed daily using SEC EDGAR filings across 13 independent models.

How Do RLAY and RLYB Valuations Compare?

At $15.70, RLAY trades +67.3% above its Bayesian DCF fair value of $5.14, while RLYB at $16.23 trades +49.7% above its estimate of $8.16. RLAY shows a wider gap between price and intrinsic value.

Quality of Company: RLAY vs RLYB

RLAY earns a Quality of Company score of 6.0/10 compared to RLYB's 5.4/10. The scores are closely matched, indicating similar fundamental quality profiles. The QOC score synthesizes 32 signals spanning profitability margins, revenue growth, free cash flow, capital allocation, and leverage.

Value Trap Risk: RLAY vs RLYB

RLAY carries a SAFE value trap risk (18/100) while RLYB shows SAFE risk (24/100). Both companies show manageable value trap risk, suggesting their current valuations are not artificially depressed by fundamental deterioration.

Both in Biotechnology

Both RLAY and RLYB operate in Biotechnology, which has 566 stocks tracked by CirclFi. Same-industry comparisons provide the most direct insight into relative valuation since both companies face similar regulatory environments, market dynamics, and competitive pressures. Both companies are analyzed with models spanning intrinsic (Bayesian DCF, EPV), scenario-based (First Chicago), regime-switching (Markov DDM, RCMH-DCF), machine learning (ML-RIV, FTNN), and ensemble methods (CUCE).

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