SAN FRANCISCO — When Jennifer Tejada, chief executive of PagerDuty, decided to take the software company public, she wanted to avoid this week. The stock market closes on Good Friday, and many people are on spring break. She had also feared being drowned out by a horde of other tech initial public offerings.

“I remember saying, ‘I hope we don’t get run over by the ‘unicorn’ stampede,’” she said, using the term for private companies valued at more than $1 billion.

Pinterest, a digital pin board company that is also going public, wanted to beat Friday’s holiday, according to a person familiar with the situation. It wound up scheduling its I.P.O. for Thursday — the same day that Zoom, a video conferencing company, will list its shares.

And Lyft and Uber, the ride-hailing companies, decided to leave breathing room between their I.P.O. filings so as not to run into each other, said two people familiar with the deliberations, who were not authorized to speak publicly. When Lyft filed first, Uber gave itself a 30-day cushion before revealing its own prospectus last week.