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Biotech Bonanza Sees BSLK Explode 446% as Small Caps Skyrocket

By ATTN Desk · Editorial oversight: Sean Han

Daily Market Recap – August 13, 2025

Overview

On Wednesday, the U.S. equity market saw pronounced strength in small- and micro-cap names, particularly within the biotech and specialty sectors. A string of double- and triple-digit gainers drove heavy trading, as investors gravitated toward beaten-down issues with upcoming catalysts. Market breadth was narrow, with a handful of stocks accounting for much of the day’s volume and volatility.

Intraday Prices and Volume

TickerATTN PriceCurrent PriceVolumePrice Change %
BSLK2.008010.9787148,840,984446.73%
VOR1.69572.000015,889,41517.95%
GBIO4.81506.50007,042,22934.95%
MNTS1.13101.8400170,023,59362.67%
SPNS42.236042.50049,618,2060.61%
WBTN11.725017.00009,361,24144.99%
CGTX1.00801.289824,040,10927.83%
HBM10.379011.390012,673,3779.80%
ADD0.11420.179940,949,29857.49%
CAVA63.780070.450022,999,27410.43%
SHOT0.44800.618337,572,29538.00%
KLC6.43307.88003,410,12722.52%
EDIT2.37903.08965,134,19629.92%
ACDC3.32003.67019,622,92610.56%
SRFM4.08204.99007,644,33022.30%
LGVN0.58700.800012,789,85736.23%
OVID0.46100.78006,077,13269.09%
SMWB7.35708.2900562,28512.71%
FATE0.88001.14943,983,91030.53%
RSLS1.48102.940626,461,39798.53%
Biotech stocks

Biotech stocks by CHUTTERSNAP

Market Trends and Patterns

Trading today was dominated by speculative biotech and low-float stocks. More than half of the tabled names recorded gains exceeding 30%, and five issues—BSLK, RSLS, MNTS, OVID and ADD—surpassed 50% gains. Volume was heavily skewed toward the largest movers, with MNTS and BSLK each trading north of 140 million shares, illustrating a chase into high-beta names.

Sector rotation appeared limited: while restaurant chain CAVA posted a modest 10% advance, and SPNS held flat, most large-cap and mid-cap indices drifted in narrow ranges. This suggests a risk-on appetite for headline-grabbing stories, as investors hunt for outsized returns in small caps ahead of potential clinical or regulatory developments.

Notable Movers

  • BSLK led the rally with a 446.7% jump. The stock more than quintupled from its prior close, fueled by surge volume of 149 million shares.
  • RSLS nearly doubled on heavy trading interest tied to an upcoming merger and Nasdaq rebranding.
  • OVID jumped 69.1% as news of a royalty deal and cash runway extension circulated.
  • MNTS rallied 62.7% amid effective S-1 clearance and anticipation of new space demonstrations.
  • ADD surged 57.5% with nearly 41 million shares changing hands after announcements on reverse split plans.

Meanwhile, SPNS saw limited movement, rising just 0.6% on thin volume relative to its float.

TL;DR

On August 13, 2025, market strength concentrated in small-cap biotech and specialty stocks. BSLK soared 446.7% on 149 million shares, while RSLS, OVID, MNTS and ADD each gained over 50% on outsized volume. Major indices remained range-bound as investors rotated into high-beta, event-driven names.

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