The HALO Trade and the End of “Software Is the Default Sector”
PE rotated capital into operationally complex assets at the highest share on record — and the operator question lands hardest at mid-market firms.
PitchBook’s Q1 2026 US PE Breakdown opens on a single figure that reframes a decade of capital flow assumptions. HALO transactions — hard-asset, large, operationally complex deals — captured 31.2% of all US PE capital deployed in Q1 2026, against an average closer to 14% across 2016 through 2024. The print is anchored by the $33.4 billion AES take-private, with EQT, Global Infrastructure Partners, Qatar Investment Authority, and CalPERS as co-investors. A single quarter’s capital concentration more than doubling its long-run average is no longer a prospective signal.
Bain’s 2026 Global M&A Report supplies the corollary at the broader corporate level. Roughly 60% of major 2025 deals were scope deals — capability adjacency, complex assets, regulated industries — the highest share on record. The HALO concentration in PE matches a wider buy-side rotation toward operationally complex assets, and the alignment between the two data sources is what makes the Q1 PE print structural rather than episodic. Read alongside Dry Powder and the Pressure to Move, what the rotation describes is capital that needed to move finding the assets the public market still values, and those assets being structurally different from the ones the asset class spent the last decade building operating playbooks for.
The other side of the software story
When Capital Concentrates Into the Sector That’s Resetting traced the same rotation from the opposite end. Software at 18% of US PE deal value in 2025 was the asset class concentrated into the sector that was about to reset. HALO at 31.2% in Q1 2026 is the asset class moving into the sector public markets are still rewarding. The two prints are the same shift recorded at different stages — the exit from one preference, the entry into another — and they describe a faster pivot than asset-class rotations usually run.
What’s unusual is the compression. A sector preference that took ten years to build is being unwound across two reporting periods, and the operating models built inside it do not adjust on the same timeline as the capital allocation.
The HALO print and what it actually captures
A 14% long-run average climbing to 31.2% in a single quarter is a specific signal, but it is also a single-quarter print, and the composition matters. HALO is dominated by mega-deals at the largest sponsors, where dedicated infrastructure and industrials funds have been operating for years. The AES take-private is exactly that pattern — strategic capital from sponsors with purpose-built funds, joint with sovereign and pension co-investors, deploying into a regulated asset that has its own operating discipline and its own engineering culture. None of that is new at the firms doing it.
What the print describes more precisely is the share of total US PE capital being absorbed by transactions whose operating logic is materially different from the sector PE has been most concentrated in. The compounding consequence falls on the firms whose playbooks weren’t designed for the asset profile now claiming that share.
Where dedicated funds change the question
The popular framing of the HALO trade — that PE is moving into operationally complex assets it doesn’t know how to run — is the wrong framing. Large sponsors with dedicated infrastructure, industrials, and energy funds have been running capital-heavy regulated assets every day for years, and many do it well. The capability is not the question.
The actual question is where the operator-asset fit lands at firms without that dedicated capacity. The mid-market sponsor with three software platforms, a healthcare services holdco, and one industrial roll-up is being asked, increasingly often, to evaluate HALO-adjacent opportunities — carve-outs from corporates rotating their portfolios, complex services platforms with regulated end-markets, asset-heavy specialty businesses that were previously more clearly outside PE’s preferred profile. The capability gap at those firms is real, and it is not something specialized funds at the largest sponsors solve for.
What the operating playbook actually carries
The operating discipline PE has built inside its preferred sector for the last decade is a specific toolkit. Operating cadence designed for software companies emphasises weekly metrics, monthly cohorts, quarterly cadence reviews, and rapid feedback loops on customer behaviour — disciplines that fit GTM and retention engineering and produce diagnostic signal in those contexts. Capital-heavy regulated assets do not produce signal on the same cadence. Engineering capacity, CAPEX governance, regulatory affairs, and asset-life management run on multi-year timelines, and the operating reviews that work for a SaaS business produce noise rather than diagnosis when applied to a transmission asset or a specialty industrial.
Most of the cross-sector PE operating transitions I’ve followed in the trade press show the same pattern: the metrics that worked in the prior asset class produce misleading signals in the new one, and the corrections come later than they should have. Leadership models built for software-era operating partners emphasise speed of iteration and tolerance for ambiguity in product-market fit. The leadership models that actually fit capital-heavy regulated assets emphasize patience with long capital cycles, stewardship of asset-life economics, and discipline against the kind of operating overlay that produces visible activity but degrades the asset’s underlying logic.
When buy-and-build stops compounding the way it did
Part of what the HALO trade represents is the asset class admitting that compounding through small bolt-on acquisitions is not producing the returns it once did. Scale dealmaking in capital-heavy regulated assets is the structural alternative — fewer, larger transactions, with operating value coming from asset-life management rather than integration synergies. The mid-market sponsor running a six-platform buy-and-build portfolio in services or software is now operating in a context where its peer firms are increasingly making one or two scale deals per year in adjacencies that look operationally foreign.
The org-chart shifts I’ve followed in PE typically precede sector rotations by six to twelve months, becoming visible before the rotation reads as a trend in the data. The hiring patterns at firms with dedicated HALO capacity have been visible for two years. The question is what the org charts at firms without dedicated HALO capacity look like by the end of 2026 — which firms hire ahead of the curve, which hire after the misallocation is visible, and which decide to stay out of HALO-adjacent deals entirely.
What 2026 is sharpening
The HALO trade is a capital-allocation shift, not a capability claim — large sponsors with dedicated infrastructure and industrials funds have been running these assets for years. The operator-side question 2026 is sharpening is what happens at the mid-market firms without dedicated HALO capacity, when a software-era operating playbook gets applied to assets it wasn’t built for — and how visible the mismatch becomes before the next bid arrives.