Here are some of the largest / most‑reputable investment firms and brokers in Sri Lanka (short notes and why they’re often recommended). I’ve cited sources so you can check current products, fees and performance before investing.

Top investment firms / brokers in Sri Lanka

• Asia Securities — one of the largest stockbrokers by trading turnover on the Colombo Stock Exchange and a frequent winner of local industry awards; strong for equity trading and institutional execution. (asiasecurities.lk)

• First Capital Holdings (First Capital) — full‑service investment institution (investment banking, primary dealer, wealth management and unit trusts). Widely recognised in Sri Lanka’s capital markets and active across advisory, primary markets and fund products. (firstcapital.lk)

• NDB Wealth / NDB Capital (NDB Capital Group) — the NDB group (NDB Wealth, NDB Investment Bank, NDB Securities) is a market leader in asset management and investment banking; NDB Wealth manages very large AUM and a broad suite of unit trusts and private‑wealth services. Good for institutional & retail fund solutions and large‑scale wealth management. (ndbwealth.com)

• Capital Trust (Capital Trust Securities) — long‑established broker and wealth manager with a large retail client base and multi‑branch presence; often listed among leading stockbroking/wealth brands. (capitaltrust.lk)

• DFCC (DFCC Bank / DFCC Asset Management and DFCC Vardhana) — DFCC group offers corporate/retail treasury solutions and has been active in sustainable finance (e.g., green bonds); useful if you want structured debt, corporate advisory, or fixed‑income solutions. (economictimes.indiatimes.com)

Other notable names you might consider (depending on the product you want)

• First Capital Treasuries / First Capital funds (money market / fixed income solutions). (firstcapital.lk)
• Other long‑standing brokers/asset managers: Capital Trust, Asia Securities (already listed), and boutique firms that offer private equity, venture/PE funds or tailored wealth services (check each firm’s licence & AUM).

How to pick the right company for you

• Decide the product first: stockbroking / online trading, unit trusts (mutual funds), discretionary wealth management, fixed‑income / primary dealer products, private equity, or corporate finance.
• Check track record & AUM: larger AUM / consistent performance is helpful for funds; broker market share matters for execution. (See each firm’s AUM, fund factsheets and past performance.) (ndbwealth.com)
• Fees & minimums: compare management fees, entry/exit loads, brokerage rates and account minimums.
• Regulatory status: confirm licences with the Securities and Exchange Commission of Sri Lanka (SEC) and membership on the Colombo Stock Exchange if applicable.
• Service fit: online platforms, advisory access, research quality, branch network, and HNW/private banking options.
• Risk & diversification: don’t concentrate only on one company or product; check fund mandates and asset allocation.

If you’d like, I can:

• Narrow this to a short list for a specific goal (e.g., “low‑risk income funds,” “equity trading,” “wealth management for >LKR 10M”), or
• Pull the latest AUM / most recent fund performance and fees for 2–3 firms you name.

Which type of investing are you most interested in (stock trading, unit trusts/mutual funds, fixed‑income, wealth management, or private equity)?