EIX Is Down 35% over 624 Days. What History Says Now

EIX Is Down 35% over 624 Days. What History Says

Edison International (EIX) is down 35.3% from its all-time high as of August 31, 2026, and has been falling for 624 days. The Drawdown Severity Score™ stands at 8.0, placing it in the red zone after moving from the yellow zone. In 5 comparable prior drops of this depth, the stock took an average of 1,321 days to recover.

Edison International Enters the Red Zone

The transition of Edison International (EIX) from the yellow zone to the red zone on August 31, 2026, marks a major shift in its risk profile. Our data shows that the Drawdown Severity Score™ has reached 8.0, which indicates a "Very Large" drawdown event. This movement signals that the stock has broken past typical historical support levels and is now experiencing a prolonged period of capital depreciation.

The yellow zone represents a moderate warning phase, where a stock is experiencing a deeper-than-normal correction but remains within historical boundaries of typical market cycles. When an asset crosses into the red zone, its severity score indicates that the decline has reached an extreme state that historically occurs less than 5% of the time. For Edison International, this transition highlights a shift from a standard market pullback to a structural risk event.

Historically, utility stocks are prized for their stability and consistent dividend distributions. When a major utility like Edison International enters the red zone, it indicates that systemic or regulatory pressures are overriding the stock's defensive characteristics. Investors tracking this asset must now evaluate how the current conditions align with historical recovery timelines.

Deconstructing the 624-Day Drawdown

As of August 31, 2026, Edison International is trading at $53.98, representing a 35.3% decline from its all-time high of $83.47. This decline has not been a sudden flash crash but rather a persistent grind downward lasting 624 days. This prolonged duration highlights the challenges facing the company as it navigates structural headwinds.

A drawdown lasting 624 days places pressure on a utility company's financial planning. Because regulated utilities rely heavily on debt and equity issuance to fund capital expenditures, a depressed stock price increases the cost of equity capital. This dynamic can complicate the funding of infrastructure upgrades, potentially leading to lower return on equity targets allowed by state regulators.

To put this in perspective, we can look at the historical behavior of the stock. Across 258 total historical drawdown events in our database, the average max drawdown for EIX is just -3.7%. Furthermore, the average drawdown duration is a brief 53 days. The current 624-day decline is more than eleven times longer than the historical average duration, demonstrating the highly unusual nature of this event.

Historical Comparison of Deep Drawdowns

When a utility stock drops over 30%, recovery is rarely swift. Our historical database shows that Edison International has experienced a decline of 30% or more only 5 times in its history. In these rare instances, the average duration of comparable drops was 1,321 days, which is approximately 3.6 years.

Looking back at the historical record of Edison International, previous drops of 30% or more have typically been associated with major macroeconomic shocks or severe regulatory crises. For example, the California electricity crisis of 2000 to 2001 and the subsequent wildfire liability scares of 2017 to 2018 represent historical periods where the stock suffered similar deep drawdowns. In each of those cases, the path to recovery was prolonged as the company had to negotiate complex legislative solutions and legal settlements.

The 1,321-day average recovery period for these comparable drops emphasizes that utility crises are rarely resolved by short-term market bounces. Instead, they require structural fixes that restore investor confidence over multiple regulatory cycles. This historical context is vital for investors who are evaluating the current 624-day timeline against past precedents.

The data indicates that when EIX enters a drawdown of this magnitude, the recovery phase is historically measured in years rather than months. This extended timeline is often due to the slow-moving nature of utility rate cases, legislative adjustments, and legal settlements. Investors must prepare for a long-term stabilization process rather than an immediate rebound.

Valuation Context and Historical Multiples

To understand the historical context of this price action, we can look at the stock's valuation multiples relative to its own history. As of the valuation snapshot date of 2026-08-30, Edison International's Price-to-Sales (P/S) ratio was 1.4, which sits in the 43rd percentile of its own daily P/S record since 2006-08-28, close to its historical median of 1.5. Meanwhile, its EV-to-EBITDA (EV/EBITDA) ratio was 9.0, placing it exactly in the 50th percentile of its own daily EV/EBITDA record since 2006-08-28, matching its historical median of 9.0.

Wildfire Legislation and Market Catalyst

The immediate catalyst for the sharp move into the red zone occurred on August 31, 2026, amid major regulatory developments in California. According to Investor's Business Daily, California utility stocks plummeted after new wildfire legislation was announced. The legislative package fell short of investor expectations, triggering widespread concern over the financial health of the state's major power providers.

Yahoo Finance reported that PG&E (PCG) and Edison International crashed as Wall Street warned of liability exposure under the proposed framework. While some retail market commentators characterized the sharp sell-off as an overreaction, institutional investors reacted defensively. Seeking Alpha noted that Edison International plunged 23% in a single day after the California bill omitted critical liability cap protections.

The regulatory environment in California is challenging for utility operators due to the legal doctrine of inverse condemnation. Under this rule, a utility can be held financially responsible for property damage caused by its equipment, even if the company met all safety standards and acted without negligence. This legal framework makes legislative protections, such as liability caps or state-backed insurance funds, critical for stabilizing utility stock prices.

The omission of these protections in the recent bill represents a setback for the company's risk profile. When the legislature failed to include a liability cap, it left Edison International exposed to future wildfire claims. This exposure explains why institutional investors reacted so strongly, leading to the rating downgrade by Mizuho and the subsequent plunge in stock price. According to Investing.com, Mizuho cut its rating on Edison International stock following the wildfire reform failure.

Severity Score Analysis and Risk Framing

The Drawdown Severity Score™ of 8.0 places Edison International in a select group of historical utility crises. This score is calculated by evaluating not just the nominal depth of the drop, but also how long the stock has remained depressed relative to its historical volatility. Because utilities are capital-intensive businesses reliant on debt markets, prolonged equity drawdowns can increase the cost of capital.

The Drawdown Severity Score™ is designed to help investors filter out short-term market noise and focus on systemic shifts. By comparing the current 35.3% drawdown against EIX's historical volatility, the model assigns a score of 8.0, which indicates an unusual risk profile. This quantitative approach allows investors to compare the severity of EIX's current situation with other utility crises across the sector.

Our data shows that out of 258 total drawdown events, the vast majority are minor fluctuations that resolve within two months. The current decline of 35.3% is an extreme tail event. This indicates that the market is pricing in structural changes to the regulatory environment rather than a temporary operational setback.

Investors monitoring the severity score will want to watch for signs of stabilization. A plateauing score indicates that the selling pressure is consolidating, while a further increase in severity would suggest that the market is uncovering additional risks. This metric provides an objective framework for tracking the stock's attempt to establish a bottom.

Monitoring Risk and Regulatory Milestones

As Edison International navigates this red zone phase, several regulatory milestones will likely dictate its path forward. Investors will need to monitor upcoming legislative sessions in California and any subsequent amendments to the wildfire liability rules. Historically, regulatory clarity has been the primary driver of recovery for distressed utility stocks.

While past performance does not guarantee future results, historical data provides a framework for managing expectations. With an average historical recovery time of 1,321 days for drops exceeding 30%, patience has historically been required. We will continue to track the Drawdown Severity Score™ to monitor how this event develops relative to historical baselines.