Dinesh Pai Business & investments @ Zerodha
Investments

My Investments

investments I have led and learnt from.

Position Sizing Philosophy

Managing private market investments isn't just about selecting high-potential teams; it's about rational capital allocation. We believe in taking simple ideas seriously and protecting against downside variance using conservative bet sizing.

Half-Kelly Sizing SimulatorInteractive Calculator

Determine optimal position sizing mathematically.

Win Probability (p)55%
10% (Low odds)95% (Near certainty)
Payoff Ratio (b)2.0x
0.5x (Downside bias)5.0x (Outsize upside)
Ecosystem Verdict
Positive Expectancy — Moderate Sizing (Half-Kelly)
Expected Value (EV)+65.0%
Full-Kelly Allocation32.5%

Maximum compounding limit (Aggressive)

Recommended (Half-Kelly)16.3%

Safeguards against variance (Dinesh's Default)

* The Kelly Sizing Philosophy: Allocating capital using full Kelly mathematically maximizes the growth rate of your bankroll in the long term, but is highly sensitive to parameter misestimation. Sizing at Half-Kelly captures ~75% of the growth rate of full Kelly while reducing asset volatility by 50%, providing a vital defense premium against unexpected variance.

Fintech 6 companies

Assetplus logo

Assetplus

Digital mutual fund distribution platform for advisors.

Capitalmind logo

Capitalmind

Quantitative investment management & research platform.

Indiadatahub logo

Indiadatahub

Comprehensive Indian macroeconomic & corporate data engine.

M2P logo

M2P

Embedded API financial infrastructure & card issuance.

Mprofit logo

Mprofit

Multi-asset portfolio management & accounting software.

Financialist logo

Financialist

Simplifying wealth advisory and financial planning.

Climate 11 companies

Akshayakalpa logo

Akshayakalpa

Certified organic dairy farming & sustainable agriculture.

Green Worms logo

Green Worms

Waste management & circular economy waste-to-resource loops.

Krop AI logo

Krop AI

AI-powered precision farming & crop yield analytics.

Matchlog logo

Matchlog

Optimizing container logistics & empty container repositioning.

Naxatra Labs logo

Naxatra Labs

Developing gearless high-torque electric motors.

Neufin logo

Neufin

SaaS platform aggregating climate finance & carbon offset capital.

Ossus Bio logo

Ossus Bio

Generating clean green bio-hydrogen from industrial wastewater.

Solarsquare logo

Solarsquare

Residential rooftop solar installation & financing.

Two Brothers Organic Farms logo

Two Brothers Organic Farms

Regenerative, soil-first organic farming & consumer brand.

Voltseal logo

Voltseal

Advanced cell-level thermal runaway barriers for EVs.

Zerocircle logo

Zerocircle

Seaweed-based biodegradable packaging alternative to plastic.

Health 7 companies

Adsys logo

Adsys

Diagnostic devices & medical imaging technology.

Arboreal logo

Arboreal

Stevia-based natural sugar-reduction solutions.

Blackfrog logo

Blackfrog

Portable medical-grade active cooling for vaccine logistics.

Emoha logo

Emoha

Connected 360-degree senior citizen care ecosystem.

Sukino logo

Sukino

Out-of-hospital post-operative rehabilitative care.

SuperYou logo

SuperYou

Accessible active-wear designed for diverse bodies.

The Whole Truth logo

The Whole Truth

100% clean-label food & clean snacking brand.

Other 3 companies

Galaxeye logo

Galaxeye

Multi-sensor imaging satellite constellations (SAR + Optical).

Karban logo

Karban

Design-first home air purification & smart climate hardware.

Spacefields logo

Spacefields

Custom solid-fuel rocket propulsion systems.