If your main criterion is **uptime and reliability during market hours**, there is no broker in India that publicly guarantees near-100% uptime, and all major platforms have experienced outages. However, based on reported incidents, transparency, trader feedback, and platform reputation in 2025–2026, the ranking is roughly: | Rank | App | Reliability/Uptime Reputation | Best For | |-------|------|-----------------------------|----------| | 1 | Zerodha (Kite) | Generally regarded as the most reliable discount broker; publishes incident reports when outages occur | Long-term investors and active traders | | 2 | Dhan | Strong trader feedback on stability, especially among F&O users | Active traders | | 3 | Groww | Good uptime overall, simple app, occasional high-volume disruptions | Beginners and SIP investors | | 4 | Upstox | Improved significantly but still trails Zerodha in reputation | Cost-conscious investors | | 5 | Angel One | Feature-rich but has had periodic reliability complaints | Traders wanting integrated research | A few important points: - Even the most respected platforms have had outages. For example, Zerodha experienced trading glitches in 2025, and multiple brokers (Zerodha, Groww, Angel One, Upstox) were simultaneously affected during a major Cloudflare outage in December 2025. - Independent 2026 reviews generally rank Zerodha highest for platform stability and execution quality. - Community discussions in 2026 frequently describe Zerodha as the "stability" choice, while Groww is favored for ease of use. - Some experienced investors who prioritize uptime choose bank-backed brokers such as ICICI Direct or HDFC SKY because they are perceived as more resilient, though they usually charge higher fees. **My practical recommendation for 2026:** - Long-term investing (stocks, ETFs, mutual funds): **Zerodha** - Beginner investing and SIPs: **Groww** - Heavy options/F&O trading: **Dhan** - If uptime is your absolute top priority and you don't mind higher costs: consider a bank-backed broker such as **ICICI Direct**. If you tell me whether you're a **long-term investor**, **swing trader**, or **intraday/F&O trader**, I can narrow it down further.
Sources cited · 4
- Zerodha faces outage, company 'acknowledges glitch'timesofindia.indiatimes.com/technology/tech-news/zerodha-faces-outage-company-acknowledges-glitch/articleshow/123670091.cms
- Best Trading App India: Zerodha vs Groww vs Angel (2026)tradingzenith.net/artigos/best-trading-app-india-2026
- What's your experience with Groww vs Zerodha (top 2 brokers by clients)?reddit.com/r/IndiaStocks/comments/1r2n1w9/whats_your_experience_with_groww_vs_zerodha_top_2
- Discount Brokers (Zerodha, Groww) vs. Bank-Backed Brokers (ICICI, HDFC SKY), Is the higher brokerage fee worth the peace of mind?reddit.com/r/IndianStocks/comments/1u5i7ay/discount_brokers_zerodha_groww_vs_bankbacked