The multiple expansion is uncomfortable because it is mechanically generated: FFO per share contracted to $4.27 in 2026Q3 while the equity market value held near $307 per share, leaving investors paying roughly 19.7x EV/EBITDA against an implied cap rate that has compressed in tandem. At a 72.4% NOI margin on ~$1.4B quarterly revenue, annualized NOI near $4.0B against an enterprise value implied by that EV/EBITDA multiple suggests an implied cap rate in the mid-single digits — thin relative to private self-storage transaction cap rates observed historically in the 5–7% range, leaving limited margin of safety if street-rate normalization continues.

The 44% jump in total assets to $29.0B in 2026Q3 implies a material acquisition roll-in, and the margin slippage is consistent with newer or lower-quality assets carrying higher operating ratios than the legacy coastal portfolio. Because FFO per share declined 8% over the same period while revenue grew 11.6% year over year, the incremental property cash flow appears to be absorbed below the NOI line — financing costs on ~$12.0B of debt and preferred distributions are the most likely candidates, meaning FFO growth is not currently tracking organic NOI momentum.

The pattern is episodic rather than structural — 70–73% payouts in 2026Q1 and Q2 suggest seasonal or timing-driven dividend outflows — but two readings above 140% in ten quarters warrant monitoring, particularly since 2026Q3 distributions of $1.2B exceeded both AFFO of $721.5M and operating cash flow of $708.9M. With the dividend yield at 4.3% on the current quote, investors are being compensated for that uncertainty, but sustained payouts above 100% of FFO would force either dividend restraint or incremental preferred issuance, the latter of which carries its own distribution drag on common shareholders.

The apparent deleveraging is an artifact of the 58% equity expansion, not debt reduction — total debt actually rose 28% to $12.0B from $9.4B in mid-2024. A coverage ratio near 3.1x against $12.0B of debt and a $560.4M cash position leaves limited room if the company must roll maturities above its current weighted-average cost; investors should also note the unresolved discrepancy between the 0.79 debt-to-equity reading and higher figures cited elsewhere in PSA's disclosures, which may reflect preferred-equity classification choices that materially change the true leverage picture.

The book-value premium reflects PSA's low-basis, decades-held coastal parcels rather than superior current earning power — ROE of 3.1% in 2026Q3 trails EXR's 6.7% and CUBE's 12.2%, and ROIC comparisons would likely confirm a similar gap given the company's compressed margin trend. The 4.3% dividend yield also sits below CUBE's 5.2% and NSA's 5.3%, meaning PSA investors are paying up for balance-sheet quality that the interest-coverage data increasingly questions; if coverage continues to drift toward 3x, the historical valuation premium to peers may narrow.