The initial public offering market remained active at the end of September, with four traditional IPOs raising $2.3 billion and two direct listings joining public trade.

Warby Parker Inc. (WRBY  ) opened for trading up 35% from its reference price at $54 per share in its direct listing on the New York Stock Exchange. The company sells prescription glasses starting at $95 per pair through both its online store and in over 145 brick-and-mortar locations. The stock ended the week up 34%.

Amplitude, Inc. (AMPL  ) opened for trading 43% above its reference price of $50 per share in its direct listing on the Nasdaq. The company provides a customer behavior analytics for over 1,200 customers to improve and optimize digital products and businesses. The stock finished up 56%.

Beyond direct listings, Olaplex Holdings, Inc. (OLPX  ) priced its upsized offering above its upwardly revised range to raise more than $1.5 billion. The company is a leading brand of premium hair health products containing a patented repair ingredient. The stock ended the week up 9%.

TDCX, Inc. (TDCX  ) priced its upsized offering at the high end of its range to raise more than $348 million. The Singapore-based tech services provider offers digital customer experience solutions globally in more than 20 languages. The stock finished the week up 6%.

Exscientia Ltd. (EXAI  ) priced its upsized offering at the high end of its range to raise $305 million. The AI-driven biotech develops and licenses small molecule therapies, as well as its drug discovery platform. The stock ended the week up 23%.

First Watch Restaurant Group, Inc. (FWRG  ) priced its shares within its range to raise more than $170 million. The restaurant chain serves only breakfast, brunch and lunch at over 420 locations it owns and franchises across the United States. The stock ended the week up 23%.

For the first full week of October, three traditional IPOs are slated to price:

Life Time Group Holdings, Inc. (LTH  ) plans to raise more than $1.1 billion from 46.2 million shares priced between $18 to $21 each. The fitness chain operates more than 150 centers across 29 U.S. states and one province in Canada, serving roughly 1.4 million members as of July 31, 2021.

iFIT Health & Fitness, Inc. (IFIT  ) plans to raise more than $743 million from nearly 30.8 million shares priced between $18 to $21 each. The fitness equipment brand is the number one provider of large fitness equipment in the United States, selling under the brands including iFIT, NordicTrack, ProForm, and Freemotion.

IsoPlexis Corp. (ISO  ) plans to raise about $153 million from over 8.33 million shares priced between $14 to $16 each. The company says its platform is the first to employ both proteomics and single cell biology to characterize and link cellular function to patients outcomes.