Key Highlights

  • Alphatec Holdings shares are trading down 34.04% at $7.50 after full-year Revenue guidance fell to about $862 million.
  • Roblox shares are trading down 15.29% at $44.44 after fourth-quarter bookings were guided down 10% to 15%.
  • NPK International lowered 2026 revenue guidance to $300 million to $305 million, citing dry weather in Texas.
  • Bright Horizons Family Solutions took a $290.0 million Goodwill Impairment and trimmed 2026 adjusted Earnings guidance to $4.98 to $5.03 per share.
  • Twilio shares are trading down 22.05% at $188.55 even as full-year free Cash Flow guidance rose.

Which Stocks Are Falling After Guidance Cuts or Weak Outlooks Today?

A group of companies that reported results on Oct 29, 2026 is trading sharply lower on Oct 30, 2026, with outlooks at the center of each story. Alphatec Holdings (NASDAQ:ATEC) is trading down 34.04% at $7.50, Roblox (NYSE:RBLX) is trading down 15.29% at $44.44, and NPK International (NYSE:NPKI) is trading down 15.98% at $9.41.

Bright Horizons Family Solutions (NYSE:BFAM) is trading down 16.58% at $55.88, and Twilio (NYSE:TWLO) is trading down 22.05% at $188.55. Each percentage is measured against that company's own prior close, so the bases differ, and the order here follows the theme rather than the size of the move.

The stories are not identical. Alphatec, NPK International and Bright Horizons lowered at least part of their 2026 guidance, Roblox guided to a weak fourth quarter, and Twilio raised annual targets while guiding to slower organic growth in the final quarter. Twilio is therefore a fit check against a strict guidance cut theme.

Alphatec Holdings: why did a lower revenue outlook outweigh higher EBITDA guidance?

Alphatec Holdings reported third-quarter revenue up 13% to $221 million, which management said fell short of its expectations, mainly because of lower Biologics attachment. The company now expects 2026 revenue of about $862 million, against about $890 million in a February outlook, and free cash flow of about $10 million, against at least $20 million previously.

Adjusted EBITDA guidance moved up to about $137 million from about $134 million, and the quarter's adjusted EBITDA Margin was 17.3%. Alphatec is a spine-focused medical device company. Prior-guidance figures come from a third-party report of the February release and may have been updated in between. The 52-week range of $6.82 to $23.29 comes from a data page dated Oct 23, so the low may now differ.

Roblox: how did fourth-quarter bookings guidance overshadow a smaller-than-expected loss?

Roblox shares are trading down from a prior close of $52.46. The company posted an adjusted loss of $0.32 per share against an expected $0.43 loss, but guided fourth-quarter bookings to $1.89 billion to $2.0 billion, a decline of 10% to 15% year over year. Management pointed to seasonal user patterns and the expected build-out of AI systems.

Third-quarter bookings were about $1.7 billion, down 12%, and daily active users were 138 million, down 9% year over year. The fourth-quarter net loss is guided to $363 million to $423 million. Figures here come from secondary summaries because the company filing could not be retrieved, so they should be checked against the earnings release.

NPK International: what pushed 2026 revenue guidance below the old floor?

NPK International lowered full-year revenue guidance to $300 million to $305 million, citing exceptionally dry weather in Texas that weighed on matting Demand in the third quarter and early in the fourth. An earlier range of $313 million to $323 million was taken from an aggregator page dated Jul 29, 2026, since the company release did not restate it.

The quarter itself grew. Revenue rose 11% to $76.3 million and adjusted EBITDA from continuing operations rose 30% to $20.0 million. Full-year adjusted EBITDA guidance is $90 million to $93 million. The company, which rents and sells composite matting, ended September with $4.2 million in cash and $26.3 million of total debt.

Bright Horizons Family Solutions: how large was the effect of the $290 million impairment and lower guidance?

Bright Horizons Family Solutions reported a third-quarter net loss of $230.7 million, driven by a $290.0 million goodwill impairment mostly tied to Australian operations. GAAP diluted earnings were a loss of $4.76 per share. Revenue rose 5% to $841.5 million and adjusted Diluted Earnings per Share rose 15% to $1.80.

The company now expects 2026 revenue of about $3.07 billion and adjusted earnings per share of $4.98 to $5.03. A July summary of the second-quarter report had pointed to $3.085 billion to $3.115 billion and $5.05 to $5.15, so both measures moved lower. The prior close of roughly $67 is derived from the percentage move.

Twilio: why are shares down 22.05% after a guidance raise?

Twilio reported third-quarter revenue up 20% to $1.56 billion, with organic growth of 16%, and lifted its full-year reported revenue growth outlook to 20%. Even so, fourth-quarter revenue guidance of $1.595 billion to $1.605 billion implies organic growth of only 11% to 12%, and non-GAAP earnings per share is guided to $1.48 to $1.53 against $1.65 in the third quarter.

The explanation that investors are reacting to this slowdown is an inference from the filed figures, since no post-results commentary was found. Valuation figures such as a Market Value near $39 billion were pre-results data as of Oct 28. Twilio also repurchased $127.2 million of stock in the quarter.

How the Declines Compare: Spread, Average and Guidance Gaps

The moves range from a 15.29% decline for Roblox to a 34.04% decline for Alphatec Holdings, a calculated spread of 18.75 percentage points. The calculated average of the five declines is 20.79%. Three of the five fell between 15.29% and 16.58%, so Alphatec and Twilio account for most of the dispersion.

The size of the revenue cuts differs too. Alphatec's new revenue outlook is a calculated 3.1% below its February figure, while NPK International's midpoint is a calculated 4.9% below the earlier range, though that range comes from an aggregator. Twilio at $188.55 trades at a calculated 20.0 times the price of NPK International at $9.41.

What to Watch Next: NPK International Call and Roblox Product Launches

NPK International holds its conference call on Oct 30, 2026, the same day as the decline, where management is expected to discuss weather, Utility demand and fleet spending. Roblox has dated product items in December 2026, when Roblox Build launches in the United States, and in the first half of 2027, when Roblox Everywhere and Roblox Reality roll out.

No dated release was identified for Alphatec Holdings, Bright Horizons Family Solutions or Twilio beyond their next quarterly reports. For Alphatec the focus is whether biologics attachment recovers, for Bright Horizons the pace of center closures and back-up care growth, and for Twilio whether organic growth stabilizes near the guided 11% to 12%.