If your top priority in 2026 is **uptime and reliability during market hours**, there is no broker in India that can honestly claim 100% uptime. Even the largest platforms have experienced outages from either internal glitches or external infrastructure failures. Based on reported outages, transparency, trader feedback, and platform maturity, this is a reasonable reliability ranking for 2026: | Rank | App | Reliability Notes | |--------|--------|--------| | 1 | Zerodha (Kite) | Most mature trading infrastructure, transparent outage reporting, preferred by active traders. Still had notable outages in 2025–26. | | 2 | Groww | Excellent app experience and huge user base, but traders occasionally report peak-hour stability concerns. | | 3 | Upstox | Generally decent, though outage history and support reputation are less consistent than Zerodha's. | | 4 | Angel One | Large broker with strong adoption, but has also been affected by industry-wide disruptions. | | 5 | HDFC Sky | Smaller active-trader community, but some traders report good stability due to traditional brokerage infrastructure. Evidence is mostly anecdotal. | ### For different investor types - **Long-term investor / SIP investor:** Groww - **Active trader (equity, F&O):** Zerodha - **Cost-conscious trader:** Upstox - **Reliability-first trader:** Keep accounts with **two brokers** (many serious traders maintain a backup account for outage days). ### My practical takeaway For uptime alone, **Zerodha Kite remains the closest thing to the industry benchmark in India in 2026**, despite occasional outages. If you're trading significant capital, a backup account with Groww, Upstox, or HDFC Sky is often more valuable than trying to find a broker that never goes down. If you tell me whether you're: 1. Long-term investing, 2. Swing trading, or 3. Intraday/F&O trading, I can give a more specific recommendation.
Sources cited · 5
- Cloudflare explains why Zerodha, Groww and other Indian trading apps suffered outagemoneycontrol.com/technology/cloudflare-explains-why-zerodha-groww-and-other-indian-trading-apps-suffered-outage-article-13713179.html
- Zerodha vs Groww vs Upstox 2026: The Honest Comparison (Brokerage, App, Customer Support) | Vitthubvitthub.com/blog/zerodha-vs-groww-vs-upstox-2026
- Zerodha vs HDFC SKY vs Groww: is the app stability better during peak morning hours?reddit.com/r/NSEbets/comments/1sy50m4/zerodha_vs_hdfc_sky_vs_groww_is_the_app_stability
- Cloudflare Down: Zerodha, Groww Down, users report issues logging in, placing orders and accessing market data - Technology News | The Financial Expressfinancialexpress.com/life/technology-cloudflare-down-zerodha-groww-down-users-report-issues-logging-in-placing-orders-and-accessing-market-data-4066893
- Frustrated with my Zerodha’s API going down every couple of weeks. Anyone found something actually stable?reddit.com/r/IndianStreetBets/comments/1rtipso/frustrated_with_my_zerodhas_api_going_down_every