Best Blogs Tools for Investing

The Zen of Investing

The Zen of Investing is a free special-situations site focused on upcoming and recent spin-offs. It links press releases, decks, prospectuses, filings for event-driven research before deeper work elsewhere.

ORTEX

ORTEX combines short interest, securities lending, options flow, and trading-signal data for active investors, analysts, and data teams. Deeper web and API access sits behind paid tiers. It is a signal service, not a broker or portfolio ledger.

Prospero.ai

Prospero.ai is a mobile signal app for US stocks and ETFs. It provides 10 relative scores, daily screens and picks, watchlists, and educational pages. Its app page labels signal alerts as coming soon; it does not provide trade execution or a public API.

Quartr

Quartr provides earnings calls, live transcripts, filings, reports, decks, estimates, AI chat, and investor-relations data. The app is useful for free call and transcript access; Pro and API serve professional research, MCP, webhooks, and integrations.

Portfolio123 combines stock and ETF screens, ranking systems, point-in-time backtests, portfolio tracking, broker links, DataMiner, and API access.

Charles Schwab

Charles Schwab combines a U.S. brokerage, research, screeners, tax workflows, thinkorswim, paper trading, alerts, market data, and Trader API access. It suits investors who want one regulated account for long-term investing and active trading. It is a broker, not an open market-data API.

IPO Watch (ipowatch.in)

IPO Watch tracks Indian mainboard and SME IPOs, GMP, subscriptions, allotments, listings, and related corporate actions. It is not a broker or SEBI-registered adviser. Verify issue terms and application status with the exchange, registrar, prospectus, and broker.

Office of Financial Research (U.S. Treasury)

The Office of Financial Research publishes U.S. Treasury financial-stability monitors, funding data, money-market transparency, bank risk views, and hedge-fund datasets in public JSON and CSV. It supports macro and market-structure research, not real-time trading, stock screens, or portfolio tracking.

OptionCharts

OptionCharts visualizes option payoffs, Greeks, volatility skew, expected moves, gamma and delta exposure, contract history, and market-wide trends. It is for options research and chart exports, not brokerage, a public data API, or guaranteed real-time access on every plan.

Sure Dividend

Sure Dividend is a research publisher for long-term income investors. It offers curated ideas, newsletters, valuation work, ranking sheets, dividend lists, and a premium database with hundreds of reports and weekly updates. It is not a broker, tax-lot system, live tracker, or trading platform.

GuruFocus

GuruFocus combines global fundamentals, valuation, GF Score, GF Value, stock, ETF, and bond screens, backtests, guru and institutional holdings, insider trades, portfolios, spreadsheet add-ins, and APIs. It is built for fundamental and value research, not brokerage execution.

ETF Insider

ETF Insider analyzes stocks, ETFs, and mutual-fund portfolios for holdings overlap, concentration, correlations, exposure, and efficient-frontier tradeoffs. Full holdings and Excel export require Pro; API and white-label access require Enterprise.

Bridgewater Associates

Bridgewater's public site is a research library, not a self-serve way to invest with Bridgewater. It is useful for reading the firm's macro work on Pure Alpha, All Weather, risk parity, inflation, monetary policy, debt cycles, and systematic investing. The site does not open Bridgewater mandates to ordinary investors.

ChartMill

ChartMill is a browser screener and charting service for U.S., Canadian, and European stocks and some ETFs. It supports technical and fundamental screens, swing-trading ideas, watchlists, alerts, dashboards, ratings, and strategy templates. It is still a research tool, not a broker or full portfolio ledger.

Finimize

Finimize turns market news and investing education into a daily newsletter and mobile app. Free readers get concise finance news; Pro adds investment theses, entry points, risks, sizing, ongoing coverage, live ideas, model portfolios, and performance tracking. It is a content and ideas service, not a broker, accounting tool, API, or deep analytics terminal.

Kubera

Kubera is a paid balance-sheet and portfolio tracker for households, founders, expats, advisors, and family offices. It aggregates banks, brokers, crypto, real estate, private equity, alternatives, documents, beneficiaries, and currencies, with scenarios, estate handoff, advisor portals, and an API. It is reporting software, not a broker, tax engine, or rebalancer.

MarketScreener

MarketScreener combines global quotes, news, watchlists, screens, charts, calendars, analyst data, financials, transcripts, ESG data, insider data, newsletters, and published portfolios. Several screens, reports, and portfolios require a paid plan.

MarketXLS

MarketXLS puts market data, options, portfolio analytics, screens, and templates inside Excel. It covers stocks, ETFs, options, funds, crypto, forex, fundamentals, FRED, ETF holdings, and broker order tickets. It is personal-use spreadsheet software, not a redistributable data API; real-time coverage and exchange access are tiered.

StockAlert Pro

StockAlert Pro monitors stocks and ETFs through configurable alerts, watchlists, AI equity reports, and developer integrations. It covers price, technical, volume, fundamental, dividend, and scheduled conditions. It does not place trades or replace portfolio accounting.

Tickertape

Tickertape is an India-first web and mobile research app for stocks, funds, ETFs, screens, portfolios, alerts, events, forecasts, and broker-linked holdings. Free covers the core workflow; Pro adds custom screens, exports, historical sentiment, alerts, forecasts, and multi-account tools. It is not a global terminal or raw API.

Trefis

Trefis combines public company data, valuation models, risk and return comparisons, trade ideas, and model portfolios. Its software also converts Excel models into web dashboards. Current paid tiers and prices are not published on its signup page.

Visualping

Visualping monitors web pages for changes with controls for frequency, thresholds, screen regions, selectors, wait times, proxies, and browser actions. It can support research and compliance monitoring, but it does not provide market data or trade execution.

Damodaran Online (NYU Stern)

Damodaran Online is Aswath Damodaran's free NYU Stern library of valuation and corporate-finance models. It includes datasets, equity and country-risk premiums, betas, multiples, spreadsheets, and teaching notes. It supports manual valuation work, not live screening or portfolio monitoring.

Dividend Watch

Dividend Watch tracks income portfolios with forecasts, calendars, safety scores, stock and ETF research, and broker sync. Pro adds DRIP records and curated ideas. The free tier is small, and the service is not a broker or live terminal.

10X EBITDA - Hedge Fund Presentations

A free archive of more than 100 hedge-fund and activist pitch decks. Use it to study how investors make a case, frame valuation, and argue for a catalyst. The material is educational and static, so it is not a source of current prices or recommendations.

13F Insight

13F Insight pulls institutional holdings, insider trades, and ownership filings into one research workspace. Its AI can answer questions with filing citations, but the filings arrive late and the generated summaries still need a check against the SEC documents.

Capitol Trades

Capitol Trades tracks U.S. congressional trading disclosures under the STOCK Act. Filter trades by politician, issuer, chamber, party, committee, state, asset, transaction type, sector, size, and filing details. Disclosures can arrive after the trade, and reported amounts are ranges rather than exact fills.

CEO.CA

CEO.CA combines Canadian small-cap chat rooms with market data for TSX, TSXV, and CSE issuers. It offers watchlists, news, SEDI insider filings, private placements, mobile access, and paid Level II depth. Community posts are leads, not research, and Pro pricing varies by exchange coverage.

Chittorgarh.com

Chittorgarh.com covers Indian IPOs, FPOs, rights issues, NCDs, bonds, broker reviews, subscriptions, and GMP estimates. Use the exchange, registrar, and prospectus to verify issue facts. The site does not provide a public API.

Dune

Dune lets users query decoded blockchain data with SQL and turn it into dashboards, APIs, alerts, uploads, and agent workflows. Free access is view-only; executing queries needs a trial or paid plan.

ETF Action is a professional ETF research and model-building service. It covers classification, look-through holdings, overlap, flows, model portfolios, 13F screens, exports, and enterprise data workflows. It is for teams that need more than a free quote page.

European Central Bank (ECB) - Statistics & Data

European Central Bank Statistics & Data is the ECB's primary source for euro-area statistics, policy rates, FX reference rates, yield curves, inflation, macro indicators, downloads, and SDMX access. It supplies the data behind macro research, not investment-app commentary.

FinancialJuice delivers market headlines, audio squawk, text updates, macro-calendar context, and event alerts across equities, rates, FX, commodities, crypto, and futures. It is for awareness around releases and news, not deep valuation; real-time access depends on the plan.

IBISWorld

IBISWorld sells industry reports, risk ratings, forecasts, financial benchmarks, business-environment profiles, APIs, and AI report search. It can provide industry context before a company or sector review. Membership pricing is quote based, and individual reports carry high one-time prices.

In Practise

In Practise is a qualitative research library of executive interviews, transcripts, surveys, and company series. It adds operating detail, customer and competitor views, and management perspective to filings and valuation work. Sampling is limited on the free plan; full access and private interviews are paid.

Investment Masters Class (MastersInvest.com)

Investment Masters Class is a free collection of investing lessons, letters, reading, and essays about notable investors and business builders. It is for improving process and judgment, not screens, data, signals, or personal advice.

Investopedia

Investopedia combines free finance education, market news, explainers, calculators, newsletters, and a Stock Simulator. It is useful for beginners, students, educators, and practice accounts. The simulator supports NYSE and Nasdaq equities and basic options, but not live execution.

InvestorGain

InvestorGain tracks Indian IPO GMP, subscriptions, allotments, anchor allocations, listing performance, rights issues, NCDs, sovereign gold bonds, and broker comparisons. Verify issue terms with exchanges, registrars, prospectuses, and brokers. GMP is not an official listing forecast.

Letters and Reviews

Letters and Reviews is a free curated collection of fund-manager, hedge-fund, and shareholder letters, ticker mentions, and quarterly 13F pages. It is a lightweight idea-research starting point. It is not a normalized holdings database, alert service, full-text platform, or recommendation engine.

LuxAlgo

LuxAlgo combines market pages, technical indicators, screens, natural-language strategy generation, and AI Backtesting. Its paid algos integrate with TradingView, while generated strategies can use webhooks on compatible external platforms.