11h agoThe Motley FoolNEUTRAL 48General
Fastly's CTO Sells Over 33,000 Shares for $825,000 After the Stock Rose 177% Over the Past Year
The specialized edge cloud infrastructure provider disclosed a notable insider stock sale.
Archived explainer. For the current picture see today's FSLY page.
Why Is FASTLY INC A (FSLY) Stock Up Today?
By the Top Tier Newswire AI Desk · September 22, 2026 at 12:01 AM ET · reviewed against 8 wire stories
FASTLY INC A (FSLY) is up +14.92% in the latest session. Our newswire has captured 8 stories on FSLY across 7 sources in the last 36 hours, with AI sentiment reading bullish (avg 62/100).
Public view, delayed 4h. Every headline, price and sentiment read below — and this write-up itself — reaches Pro subscribers live. Public readers see it once it clears the delay.
Fastly Inc A (FSLY) surged 14.92 percent to $27.42 on September 21, 2026, driven by the company's announcement of new AI security tools and a rise in machine-generated traffic on its network. The stock's sharp increase coincided with a broader move in edge security and AI infrastructure, with peers also seeing gains. The launch of AI Runtime Control, AI Firewall, and expanded API Security capabilities appears to have captured investor attention.
What Happened
Fastly announced that machine-generated traffic on its network had exceeded 50 percent, prompting the company to introduce new AI security tools designed to provide real-time visibility and control across AI systems. These tools include AI Runtime Control and an AI Firewall, which aim to govern model access, block LLM-based attacks, and enforce API contracts for AI agents. The move was accompanied by a 14.92 percent jump in the stock price, with Fastly's shares reaching $27.42. The CTO of Fastly, Artur Bergman, and other insiders sold shares on September 17, 2026, and the company has seen 26 insider sales totaling $19.4 million over the past 90 days.
What The Data Shows
Over the past eight sessions, the stock has risen 19.9 percent, from $22.71 to $27.23. The recent price action was supported by unusual call options activity, with a notable call premium of $606,000 and no put premium. The stock also printed one fresh 52-week high and one 52-week low on the same day. Fastly’s market cap stands at $3.8 billion, with a trailing twelve-month revenue growth of 20.4 percent, but the company remains unprofitable with a net margin of -11.8 percent and an EPS TTM of -0.53.
What To Watch
Investors should monitor Fastly's upcoming earnings report if one is scheduled. Otherwise, the breadth of coverage and market reaction to the new AI tools will be key indicators of the stock's near-term trajectory.
AI-assisted analysis composed exclusively from headlines and data on the Top Tier newswire. Public view is delayed 4 hours from real time. Not financial advice.
FSLY by the numbers
Last: $27.42Session: +14.92%7 sessions: +19.90%Coverage: 8 stories / 7 sourcesAI sentiment: 62/100 (bullish)Mkt cap: $3.8B52w: $7.74 to $34.82
The headlines behind the move
13h agoThe FlyBULLISH 62General
Fastly Inc call volume above normal and directionally bullish
14h ago24/7 Wall St.BULLISH 67Product/PR
Fastly Soars 14% on AI Firewall Launch; Cloudflare Climbs 7%, Datadog Rises 5%
Fastly (NASDAQ:FSLY) is at the center of a same-session bid across edge security and artificial intelligence (AI) traffic infrastructure, with two large peers rising alongside it on no news of their own. The move looks like buyers repricing a category rather than reacting to an isolated launch. The First Trust Cloud Computing ETF (NASDAQ:SKYY) is […]
16h agoTipRanksBULLISH 67Product/PR
Comcast Stock (NASDAQ:CMCSA) Levers Up After Deal With Fastly
Entertainment giant Comcast ($CMCSA) recently set up a new deal with Fastly ($FSLY), and it could be quite the winner for both sides. The new deal brings Fastly’s e...
17h agoMarketChameleonBULLISH 67Product/PR
Fastly Rallies as It Says Machine-Generated Traffic Topped 50% on Its Network and Launches New AI Security Controls September 21, 2026
Fastly announced AI Runtime Control, AI Firewall, and expanded API Security capabilities aimed at giving organizations real-time visibility and control across AI systems. The company tied the launch to a shift it says it is already seeing on its network—machine-generated traffic crossing 50% in July and August and AI traffic growing 6.5 times faster than human traffic from January through May.
19h agoMarketChameleonBULLISH 67Product/PR
Fastly Expands “Fastly for AI” With Runtime Control and an AI Firewall as Machine Traffic Tops 50% on Its Network September 21, 2026
Fastly (FSLY) announced AI Runtime Control, AI Firewall, and expanded API Security capabilities aimed at governing model access, blocking LLM-based attacks like prompt injection, and enforcing API contracts for AI agents. The company tied the launch to shifting network dynamics, noting machine-generated traffic crossed 50% in July and August and that AI traffic grew 6.5x faster than human traffic from January through May.
19h agoYahoo TopBULLISH 57Analyst
Should You Be Bullish on Fastly (FSLY)?
Carillon Tower Advisers, an investment management company, released its second-quarter 2026 investor letter for the “Carillon Eagle Small Cap Growth Fund”. The letter can be downloaded here. Small-cap stocks rallied broadly in the second quarter, with the Russell 2000 Growth Index (+25.71%) outpacing Value +17.24%). Information Technology (+46.79%) led all sectors, supported by solid gains […]
20h agoStockTitanBULLISH 63Product/PR
Fastly Launches AI Firewall and AI Runtime Control to Secure and Scale AI
Fastly’s new AI tools are now available on a platform with 622 Tbps capacity and more than five trillion daily requests, measured in 2026.
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More on FSLY: full news and sentiment history. Sentiment scores are AI-derived research signals, not financial advice.
Earlier FSLY move explainers: 2026-09-22 · 2026-09-21 · 2026-09-18 · 2026-09-09 · 2026-09-02 · 2026-09-01 · 2026-08-25 · 2026-08-24 · 2026-08-20 · 2026-08-19 · 2026-07-17