CIG — the NYSE-listed ADR for Brazilian power utility Companhia Energética de Minas Gerais — enters its May 7 earnings date in a curious spot: a week of selling in the stock, a sharp tick-up in short positioning, and a borrow market that has only recently calmed down after weeks of extreme volatility.
The headline move this week is in short positioning. Estimated short shares jumped 67% week-on-week to roughly 2.57 million — still only 0.15% of the free float, so there is no meaningful crowding story here, but the direction of travel is notable. That sharp rebuild follows a week (April 23–24) where short positions compressed hard before bouncing back. The borrow market tells a similarly turbulent recent story. Cost to borrow collapsed from a spike above 2.8% in early April to just 0.45% now — down 97% versus a month ago. That extreme oscillation reflects how thin this lending pool is: a small rush for borrows briefly sent rates to many multiples of their current level, before supply reasserted itself. Availability remains ample relative to the small short base, and the ORTEX short score of 26.4 is unambiguously low — this is not a stock under meaningful short-selling pressure.
Options positioning is equally calm. The put/call ratio is running at 0.42, almost exactly in line with its 20-day average of 0.42 and a z-score of just 0.25 — there is no hedging premium or directional skew visible ahead of the print. The 52-week low on PCR was 0.02, the high was 0.49; the current reading lands near the upper half of that band, but the deviation from the recent mean is negligible. Together, the short and options picture describe a market that is modestly cautious but nowhere near defensively positioned.
Where CEMIG looks more interesting is on valuation and factor scores. The EV/EBITDA multiple is running at 5.7x — and has compressed by roughly 9 basis points over the past month — making it inexpensive by most utility comparisons. The earnings yield ranks in the 94th percentile of the universe, and the dividend score lands in the 79th percentile, pointing to an income profile that still looks attractive relative to peers even without confirmed current dividend data. EPS surprise is exceptional, ranking in the 95th percentile — the company has a strong track record of beating estimates. Days-to-cover ranks in the 80th percentile, which sounds alarming until you note that DTC is below one day; the high rank simply reflects how lightly shorted the stock is across the board.
On the institutional side, BlackRock added 6.9 million shares through March-end, lifting its position to 7.36% of shares outstanding. Vanguard added 1.6 million over the same period. Both moves are modest in the context of existing large holdings, but the direction is consistent: the two biggest passive managers were net buyers as the stock traded at current levels. The State of Minas Gerais and PPLA together control roughly 34% of the register, giving the ADR a structurally thin free float that amplifies any short-covering or institutional flow.
The May 7 earnings event is the near-term focus. The last three confirmed print dates produced positive next-day reactions of 1.3%, 2.2%, and 0.0% — a narrow range that points to a stock that tends to move modestly on results rather than gap violently. The five-day windows post-earnings were somewhat wider (up to 4.3%), suggesting any reaction tends to extend rather than reverse. The stock closed at $2.53, down 6.3% on the week but up 7.7% on the month — a pattern of giving back recent gains into the event. Whether the May print extends that pattern or resets the setup is what to watch next.
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