Updated as of 20 July 2026
William Toni
Combining investment expertise with technology to create value beyond the numbers.
CGPA 3.6/ 4.0
Roles & Internships 5+
Projects Delivered 10+
Based in MY · ID
Combining investment expertise with technology to create value beyond the numbers.
I help businesses and people make better financial decisions through analytical rigour and strategic clarity.
My work spans portfolio construction, macroeconomic research, financial operations, and advisory across startup level entity to MNCs.
At Fortéfi Capital, I'm developing a Hidden Markov Model based economic regime detection system and constructing model portfolios across risk profiles. At UOB Kay Hian, I contribute to fund research and client-facing investment commentary using Bloomberg Terminal.
I'm a co-founder of Eternaplast, an Indonesia-based plastics retailer that has sold over 12,000 products YTM, a venture I built from the ground up.
Led the team in developing its initial business strategy in the plastic market, spearheading the launch of its plastic and disposable food service products distribution business, overseeing pricing, market positioning, and supply chain coordination. Currently serves around 250 customers across two platforms with a 4.9★ store rating.
Full Case Study ↗Constructed a diversified portfolio of 50 NASDAQ equities and 4 U.S. corporate bonds, benchmarked against the S&P 500. Performance evaluated through the Sharpe ratio (0.53 vs market 0.45), Treynor measure, beta analysis, and annualised variance, using the Fama-French three-factor model with data from WRDS and FRED.
Full Case Study ↗Part of a team pitching Sebijihub, an agritech startup connecting consumers to smallholder farmers through a micro-plot rental model: customers rent a portion of a farm and receive harvest returns, while farmers gain accessible non-bank financing. As Business Team Lead I built the financial projections and led the business model design.
Full Case Study ↗Co-developed Kerakish, a branded stain-removal product designed for a wide range of surfaces. While no longer operational, the venture strengthened my skills in business strategy, product development, branding, and hands-on project management across the full product lifecycle.
Full Case Study ↗An offline portfolio analytics workbench with a mean-variance rebalancing engine and a chat assistant that only reports figures calculated by its own tools.
A scheduled tool collecting daily NAV prices and 10+ years of distribution history from four fund houses with no public data feed, written straight into Excel.
Converts fund factsheet PDFs, digital or scanned, into a live Excel view of underlying holdings, combining overlapping positions to reveal hidden concentration.
A consent-based referral tool mapping a firm's professional network up to three connections deep. Contact matching happens entirely in the browser.
Working tools across applied AI, quantitative finance, and data engineering. Source code available on GitHub.
GitHub Profile ↗
Excel
R
SAP
Claude Code
PythonOpen to graduate roles, internships, and conversations across investment, advisory, and financial technology.