Tank Stream Ventures

Rui Rodrigues serves as the Managing Partner and leads day-to-day investment decisions from Sydney. Co-founder Mark Carnegie, a prominent Australian investor, remains involved strategically but Rodrigues drives the deal flow and portfolio management operation. The firm has not publicly disclosed a formal investment committee structure, though the small-partnership model typical of Australian venture GPs suggests Rodrigues holds the key decision-making authority.

Tank Stream's sourcing relies heavily on Rodrigues's network from his BlueChilli tenure and Carnegie's long-standing Australian deal relationships. The firm prioritizes founders with deep domain experience who have worked inside the problem they are solving — a posture that naturally narrows the funnel toward repeat-operator networks and ex-tech-executive circles. Tank Stream does not run a public scouts program or content-marketing engine, leaning instead on direct GP-to-founder outreach.

Tank Stream is a hybrid venture firm. It runs a direct-investment book targeting Australian seed-to-Series B technology companies, but it also allocates fund capital into US and global venture fund commitments — a fund-of-funds sleeve that most Australian pure-play VCs do not maintain. This structure gives the firm's LP base a portfolio effect across domestic direct deals and international managed pools.

Tank Stream actively participates in both direct deals and fund commitments. The direct side has backed Australian companies such as corporate learning platform Go1 and enterprise SaaS company Expert360. On the fund-of-funds side, the firm has historically placed capital into US top-quartile venture managers, though it does not publicly disclose the specific manager relationships.

For an institutional LP, the model offers a single-access-point structure into both Australian venture direct exposure and a curated US venture portfolio, reducing the administrative burden of committing to multiple international GPs separately. The tradeoff is reduced transparency into the fund-of-funds sleeve, since Tank Stream does not publicly name the underlying managers. An allocator would need to diligence the vintage diversification effects and whether the combined vehicle justifies the blended fee load versus building the positions directly.