Backblaze Soars 112% on $335 Million CoreWeave Storage Deal

Backblaze, Inc. stock surged 112% on June 23, 2026, following the announcement of a $335 million deal with AI infrastructure firm CoreWeave. Seekingalpha.com reported the agreement, under which Backblaze will provide significant storage capacity to support CoreWeave's expanding operations. The multi-year contract represents a fundamental shift for Backblaze, moving beyond its core B2 cloud storage service into large-scale infrastructure provisioning. The deal's magnitude immediately propelled the company’s market capitalization above $5 billion, a milestone for the previously niche-focused storage provider.

Context — why this matters now

The transaction arrives as demand for specialized AI compute capacity continues to outstrip supply, forcing cloud providers to secure long-term infrastructure commitments. The last comparable deal of this scale in the storage-as-a-service sector was DigitalOcean’s acquisition of cloud startup Paperspace for $725 million in March 2025, aimed at bolstering its AI developer platform. Currently, the 10-year Treasury yield sits at 3.92%, providing a favorable financing backdrop for capital-intensive infrastructure builds. The catalyst for this specific deal is CoreWeave’s rapid expansion following its $7.5 billion funding round in late 2025, which earmarked substantial capital for securing complementary storage for its GPU clusters.

The deal underscores a strategic pivot within the AI infrastructure stack. Compute-focused firms like CoreWeave are locking in storage capacity to ensure smooth data workflows for training large language models. This vertical integration is a direct response to bottlenecks experienced during the 2025-2026 AI boom, where compute was often idle waiting for data retrieval. Backblaze’s model, built on cost-effective storage pods in leased data centers, presents a capital-light solution for GPU cloud providers needing exabyte-scale capacity without owning physical hardware. The agreement validates the economic viability of unbundling compute and storage in high-performance AI workloads.

Data — what the numbers show

The financial terms of the deal are transformative for Backblaze. The $335 million contract value is more than double the company’s total revenue of $156.8 million for the full fiscal year 2025. Backblaze shares closed at $148.75, up from a pre-announcement price of $70.12, adding approximately $2.8 billion in market value in a single session. The stock's trading volume exceeded 45 million shares, over 15 times its 90-day average. CoreWeave’s commitment likely secures multiple exabytes of storage capacity over the contract term, though exact capacity figures were not disclosed.

A simple before/after comparison illustrates the deal's impact. Backblaze's enterprise value prior to June 23 was approximately $2.4 billion. Post-announcement, its enterprise value exceeded $5.2 billion, representing a 117% revaluation based on a single customer contract. The company’s price-to-sales ratio expanded from 15.3x to an estimated 33.2x based on last-twelve-month revenue. This valuation surge far outpaces the broader Nasdaq Composite’s year-to-date gain of 9.2%. It also contrasts with more established storage peers; Pure Storage trades at a 6.1x price-to-sales ratio, while NetApp trades at 3.8x, highlighting the premium awarded for growth tied to AI infrastructure.

Analysis — what it means for markets / sectors / tickers

The deal creates immediate second-order effects across the cloud and data infrastructure sector. Primary beneficiaries include other scalable storage providers like Wasabi Technologies and Cloudflare, whose R2 storage platform may see increased investor interest. Suppliers of storage hardware, particularly Seagate Technology and Western Digital, could see order flow increase as Backblaze scales its pod deployments to fulfill the contract. Conversely, the agreement poses a competitive threat to integrated hyperscalers like Amazon Web Services and Google Cloud, as it demonstrates a viable alternative model for AI developers seeking optimized, unbundled infrastructure.

A key risk is customer concentration. Following this deal, CoreWeave may represent over 40% of Backblaze’s projected revenue for 2026, creating significant dependency. Any operational or financial setback at CoreWeave would directly impact Backblaze’s financial performance. the capital expenditure required to provision the storage, while likely funded by upfront payments, tests Backblaze’s operational scalability. Hedge fund positioning data from the prior week showed a net short interest of 8.5% in Backblaze shares, indicating the move caught many investors off guard. Trading flow is now rotating into small- and mid-cap infrastructure software names exposed to the AI build-out theme.

Outlook — what to watch next

The immediate catalyst is Backblaze’s next earnings call, scheduled for August 5, 2026. Management will need to provide details on the contract’s phasing, capital expenditure plans, and its impact on gross margins. Investors should also monitor CoreWeave’s own growth metrics and potential future funding rounds, as its expansion directly fuels the storage demand. A key level to watch for Backblaze stock is the $125 support zone, which coincides with its 10-day moving average and represents the first major test of the post-announcement price action.

Longer-term, the success of this model will be measured by whether Backblaze can sign similar agreements with other GPU cloud providers, such as Lambda Labs or Crusoe Energy Systems. The $335 million deal sets a precedent for storage contract valuations in AI infrastructure. If Backblaze’s margins on the contract meet or exceed its corporate average of approximately 20%, it will validate the asset-light infrastructure partner model. Failure to achieve this would pressure the newly elevated valuation multiple. The next major industry event is the Goldman Sachs Communacopia + Technology Conference in September, where management commentary will be scrutinized.

Frequently Asked Questions

How does the CoreWeave deal change Backblaze's business model?

The deal shifts Backblaze from a purely transactional, SMB-focused cloud storage vendor to a strategic infrastructure partner for large-scale AI operators. Prior revenue was distributed across hundreds of thousands of customers, with no single client representing more than 2% of sales. The CoreWeave contract introduces a wholesale component, where Backblaze provisions dedicated capacity at a probable discount but with guaranteed minimum commitments. This provides predictable, contracted revenue but requires significant upfront capital deployment and operational execution to deliver the physical storage pods.

What is the historical context for a single-contract stock move of this size?

A 100%+ single-day move driven by a customer contract is rare but has precedents in technology. In February 2024, SoundHound AI shares rose over 80% after announcing a partnership with Oracle. A more direct parallel is the 2021 surge in BlackBerry stock following its announcement of a partnership with Amazon Web Services for vehicle data, though that move was approximately 60%. The magnitude of Backblaze’s move reflects both the sheer size of the contract relative to its existing revenue base and the extreme market appetite for any validated AI infrastructure play, amplifying the price reaction.