Well, someone thinks so. You can count me, though, as monstrously skeptical that you could tag the fiduciaries of the BP 401(k) plan with breach of fiduciary duty for overexposure to company stock because they failed to expect the Deepwater Horizon explosion and account for it by greater diversification. On the other hand are two notes: (1) perhaps there is a circuit, somewhere out there, with fiduciary liability standards for company stock investment that are so loose that including BP stock ahead of such an event could be deemed an actionable breach; and (2) the decline in the value of the plan’s assets may be so large that, if a class gets certified, even a minor settlement to avoid a potential ruling against the fiduciaries could easily run into the tens of millions.