Shardul Shah on Venture Conviction, Outliers and Decisions at Index

Shardul Shah argues that venture investors should not get too clever about price, underestimate exceptional founders or overthink opportunities. In his view, fixed estimates of total addressable market can miss the way great companies expand markets; venture returns are dominated by a small number of outliers.

Asked for his biggest lesson from interviews, Harry Stebbings says there is no single right way to do venture: investors should find their own strengths in sourcing, selecting and supporting companies rather than copy someone else's style. Shah agrees that being oneself matters more than imitation.

Stebbings asks whether junior investors must play internal politics to advance. Shah argues that a culture of belonging lets people be themselves rather than conform. He says the real goal is to find an investment that can return the fund, although Stebbings points out that results may take eight to ten years to become clear.

Shah limits his answer to his experience at Index Ventures, where he says mentorship and apprenticeship have been central and his promotions surprised him. He acknowledges that larger institutions may have different internal machinery. Danny Rimer taught him about partnerships, incentives and managing relationships with limited partners.

Rimer also emphasized focus and intentionality. Shah now defaults to 30-minute first meetings instead of an hour, after Rimer suggested he often knows the answer in 15 minutes. He aims to have two colleagues in a meeting, raising the threshold because he is asking for someone else's time as well.

Shah hands off a meeting when another colleague has more relevant expertise or chemistry, citing vertical SaaS specialists as an example. He prefers the word 'concentration' to 'major': he found his way into cybersecurity after starting partly in biotech, and believes focus helps with selection, winning and support.

Index investors work across seed, venture and growth stages, a model Shah would not recommend to most investors. Asked how he shifts between stages with different amounts of data, he says the starting point is always the team. Even a late-stage valuation assumes founders can discover adjacent markets over time.

Stebbings says he increasingly looks for entrepreneurial activity early in life; that is his personal interpretation of founder interviews. Shah says there is no single pattern among people. He combines an evolving intuition with an analytical framework and treats investing as a craft that needs continual refinement.

To learn from missed opportunities, Shah asked partners to write postmortems on companies where Index might have made at least $1 billion in gains. His lessons from omissions were not to be too clever on price, not to overthink, and not to pass on generational founders. Expertise can itself lead an investor to dismiss a disruptive idea too readily.

Stebbings asks where a high price becomes too high, especially after valuation resets. Shah looks for imagination, operational excellence and quality decision-making in founders. With strong early-stage conviction he says he can be elastic on price; later, he views the price as a reflection of expected future cash flow and a mistake on price as potentially a mistake on the investment itself.

Shah says every investment in Datadog was expensive at the time, as were investments in Wiz, which he notes had not yet reached an outcome. Both are Index investments, so his positive assessment reflects a direct financial interest. He seeks outliers rather than comfortable prices or average returns.

Asked about execution, timing and market-size risk, Shah calls total addressable market sizing a trap. He argues that major companies can grow beyond the markets estimated in their earlier filings, and says Index has sometimes overthought market size and underestimated its best companies. This is his investing philosophy, not a proof that price or market size never matters.

He says he wrongly expected endpoint security to become commoditized by platform providers and consequently missed companies including CrowdStrike and SentinelOne. His lesson is not that he decided too quickly, but that he overthought the category and failed to recognize founder George Kurtz's capabilities. His market-value comparison is a historical estimate from the interview.

Shah also describes backing an unnamed business whose capital intensity he underestimated while overestimating its market upside. Raising sufficient capital and building distribution can be difficult for such models. A partner is working on a way to return capital, he says, but that would not be the desired outcome.

He does not believe the best founders necessarily begin as the best fundraisers, citing Datadog's early fundraising as an example and saying its founder improved over time. He says Index's funds across stages can increase ownership in a performing company, although it avoids some highly capital-intensive models with binary scientific risk, such as drug discovery.

When considering another investment in an existing company, Shah rebuilds the case as a new opportunity to return the fund rather than merely averaging down or adding ownership. He rotates colleagues to obtain fresh views, repeats customer and competitive work and rebuilds financial models, sometimes several times in a year.

Index's first growth fund initially targeted approximately three to five times capital over three to five years, Shah recalls. Looking at results, the team saw a power law, with some much larger outcomes and few matching that precise range. He now looks for potential upside of at least five times even in later-stage investments; this is a target, not a promised or realized return.

Stebbings worries that higher Series B and C entry prices and lower public multiples will hurt a vintage. Shah counters that entry and exit happen at different times and that exceptional companies may command premium multiples. Stebbings emphasizes the effect on pricing across the market; Shah argues that averages are less useful when his strategy depends on exceptional cases.

The hardest part of doubling down, Shah says, is distinguishing conviction from delusion. Skipping details, ceasing to ask questions and being surprised by information are warning signs. At Index, respected partners challenge his thesis; if conviction survives serious disagreement and reflection, he sees a reason to investigate further.

Using Wiz as an example, Shah sketches a top-down case based on potential cloud spending, security as a share of spending and a leading company's possible market share, then compares public security companies. He also points to Wiz's growth and team. These are his assumptions, estimates and company assessment as an investor, not verified forecasts or established market shares.

He says partners challenged Wiz investments on every dimension, including people, product, competition, technology and traction. Stebbings asks how a team can debate vigorously without damaging relationships. Shah recommends walking together for difficult conversations and says the fundamentals are trust, mutual respect and admiration, which take time to build and can fracture easily.

A venture firm's power law can concentrate returns among a few investors, creating ego or insecurity that threatens trust, Shah says. Remote collaboration can add perspectives across locations; one colleague, he says, is particularly good at reading reactions on video. The trade-off is logistics, including time zones and meetings outside some participants' best cognitive hours.

Asked about a failed follow-on, Shah returns to his concern about missed winners. He regards some uses of benchmarks, patterns and risk mitigation as exercises in psychological safety when they distract investors from finding fund-returning outliers. Missing a company that becomes worth tens of billions can be costly, in his view.

Stebbings asks whether a multistage fund's failure to follow on can send a damaging signal. Shah says seed funds and multistage funds have competing interests in that debate. His own approach is to offer to underwrite an entire seed round, then reserve portions for Index, a seed fund and a small group of angels or operators, giving the founder multiple perspectives.

Shah says Index can seek more ownership later if it contributes and the company performs. Seed funds may have less flexibility because of ownership requirements, while angel allocations are more flexible. He discourages an unwieldy party round and favors a few people with useful functional expertise.

He suggests including someone who can help in a crisis as well as people with distribution, product or engineering experience. He advises against accepting customer investment because of potential conflicts and favors limiting the number of participants. Stebbings adds that a small check should not disqualify a helpful person.

Among sourcing, selecting, securing and servicing, Shah considers winning deals his strongest area and wants to improve at supporting founders. He says Index does not try to see every opportunity; that would require a different organization and perhaps a large data team.

Shah acknowledges that some excellent businesses, such as bootstrapped Mailchimp, succeed without venture capital. Nevertheless, he believes a valuable board can help at a few important strategic moments, and that a useful board member can be an investor or an independent director.

His advice to new board members is to do less and focus on decisions that matter. In one meeting, he reflected a founder's own description of an executive situation back to him; this clarified a decision that the board had been postponing. He says the value was helping the founder hear what he already knew.

Deep relationships with founders can help them say no to major opportunities and make consequential hiring decisions. Shah says an experienced board member can provide context on executives' performance. He praises Gili Raanan, Doug Leone and Mike Speiser in different ways, describing Leone as especially intuitive and able to inspire confidence.

Investors can harm a board when their own interests displace the company's, Shah says. A desire for near-term liquidity might make an investor too conservative about capital allocation, while an acquisition strategy that benefits the investor may conflict with the business's needs. These are examples of possible misalignment, not accusations against a named investor.

On selling, Shah favors a buy-and-hold approach for potential power-law winners, while seeking others' input on exits. For a company that is not a potential fund returner, he says he would sell immediately if he came to believe the founder was unethical or incompetent. Stebbings says he regrets passing up some opportunities to take cash off the table.

Shah recalls distributing proceeds from an early-stage investment after its company was acquired for roughly $1 billion. The acquirer's stock rose shortly afterwards and fell a few months later; he received calls when it rose, not when it fell. The anecdote illustrates his view of decision-making under uncertain future prices, not a general rule for timing sales.

He says venture investors may understand a company in greater detail and can choose a longer holding period, but should not assume they can outsmart public markets. Index uses a group rather than one individual to make such decisions, with disagreement intended to guard against confusing conviction with rose-tinted optimism.

Stebbings asks whether venture's future belongs to small specialist firms or firms with large pools of capital. Shah avoids naming winners and losers, saying adaptation matters in a changing industry, while the power law may allow firms to endure cycles longer than expected. This is a perspective on the future, not a forecast of particular firms' results.

On new investment categories, Shah says Index expanded its healthcare practice after opening in New York, where he cites a 25% share of Series A deals related to healthcare. The figure is his observation and the interview does not specify its source or period. He sees AI as a tailwind for existing markets and an enabler of new investments.

For public speaking, Shah recommends having fun, being oneself and recording and watching one's own performance to notice verbal habits and whether a point landed. On building the New York office, he praises the trust he shares with his colleague Marty when making many small decisions together.

Shah says analytical ability can become overthinking, and criticizes investors who call a founder exceptional without specific evidence. His suggested first-time founder mistake is failing to fire quickly enough. Looking back at the zero-interest-rate period, he thinks the strongest founders may not have grown aggressively enough and investors may have missed liquidity opportunities.

Asked what he should be asked more often, Shah jokes about whether his wife is the shadow investment committee at Index. He says he discusses decisions with her and values her common sense and ability to read him. Stebbings thanks him, and the conversation closes.