GOOGL vs STX: Alphabet Inc. vs Seagate Technology Holdings plc Historical Returns & Investment Comparison

This GOOGL vs STX comparison analyzes the historical stock performance of Alphabet Inc. and Seagate Technology Holdings plc side-by-side. Using real, adjusted market data, this tool shows how identical investments in both stocks would have performed over time—highlighting differences in returns, volatility, and consistency across market cycles.

Use the interactive calculator below to adjust the investment amount and time period, visualizing how Alphabet Inc. and Seagate Technology Holdings plc have historically performed against each other.

Company Profiles

1

Alphabet Inc.

GOOGL

Alphabet Inc. is a global technology conglomerate that serves as the parent company of Google and several other 'Other Bets' ventures. As of 2026, Alphabet is a vertically integrated AI powerhouse, leveraging its proprietary Tensor Processing Units (TPUs) and Gemini 3 foundational models to dominate digital advertising, cloud infrastructure, and autonomous systems. Its ecosystem revolves around the 'Google Services' segment, which includes the world's most popular search engine, YouTube, and the Android operating system. The company is currently navigating a 'dual-track' reality: unprecedented growth in its AI-native cloud division and the commercial scaling of Waymo, balanced against significant regulatory shifts following U.S. antitrust mandates regarding search data sharing and default agreements.

Key Innovations

  • PageRank Algorithm (The foundation of modern search)
  • Tensor Processing Units (TPU v6) - Proprietary AI-accelerated silicon
  • Gemini 3 - Multi-modal, frontier-scale generative AI model
  • Waymo Driver - Level 4 fully autonomous driving technology
  • Transformer Architecture - The research breakthrough that enabled the modern LLM era
  • AlphaFold - AI-driven protein structure prediction for drug discovery
  • Project Suncatcher - Orbital data center technology testing

Business Segments

  • Google Services
    The largest revenue segment, encompassing Google Search, YouTube advertising and subscriptions (YouTube Premium/TV), the Android ecosystem, Chrome, Google Maps, and Google Play. This segment also includes hardware sales for the Pixel smartphone line and Nest smart home devices. In 2026, this division is characterized by the integration of 'Agentic AI' assistants that perform tasks on behalf of users.
  • Google Cloud
    Provides enterprise-grade cloud infrastructure (Google Cloud Platform) and productivity tools (Google Workspace). This segment is Alphabet's fastest-growing unit, offering specialized AI training clusters powered by TPU v6 and Axion processors. It serves as a critical partner for major enterprises and AI startups needing scalable compute and sovereignty-focused data residency.
  • Other Bets
    A collection of high-growth, early-stage businesses. This includes Waymo (autonomous ride-hailing), Verily and Calico (health and life sciences), X (the 'moonshot' factory), and Wing (drone delivery). By 2026, Waymo has emerged as a significant top-line contributor following its expansion into dozens of major global metropolitan areas.
2

Seagate Technology Holdings plc

STX

Seagate is a global leader in data storage solutions. It develops precision-engineered hard disk drives and solid-state drives for enterprise, cloud, and consumer markets.

Key Innovations

  • HAMR (Heat-Assisted Magnetic Recording) technology
  • Mach.2 multi-actuator technology

Business Segments

  • Hard Disk Drives (HDD)
    Mass storage for cloud and enterprise data centers.
  • System Solutions
    Enterprise data storage systems.

How This Comparison Works

Our stock comparison tool uses adjusted closing prices to calculate year-by-year returns for both stocks. This ensures an apples-to-apples comparison that accounts for:

  • Dividends: All dividend payments are reinvested
  • Stock splits: Historical prices are adjusted for all splits
  • Head-to-head record: Shows which stock outperformed each year
  • Statistical analysis: Average returns, best/worst years, and win rates

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Important Disclaimer

This comparison tool is for educational and informational purposes only and does not constitute financial, investment, or trading advice. Past performance is not indicative of future results. Historical returns include dividends and stock splits but do not account for taxes, fees, inflation, or individual circumstances. Stock market investments carry risk, including the potential loss of principal. Always consult with a qualified financial advisor before making investment decisions. The data presented is based on historical market data and may contain inaccuracies or delays.