Palladium in my IRA? Worth it or nah?

• •Been weighing out adding a palladium allocation to my self-directed IRA and wanted to get some gut checks from this community.
• •Currently sitting on a pretty hefty stack of physical gold and silver, plus a good chunk of mining stocks outside the IRA.
• •Inside the account, it's mostly gold ETFs and some physical gold/silver I previously rolled over.

Been weighing out adding a palladium allocation to my self-directed IRA and wanted to get some gut checks from this community. Currently sitting on a pretty hefty stack of physical gold and silver, plus a good chunk of mining stocks outside the IRA. Inside the account, it's mostly gold ETFs and some physical gold/silver I previously rolled over. My overall portfolio is north of $5M, and I'm always looking for ways to diversify and hedge against this crazy economic environment we're in. Located in Scottsdale, for context, so storage isn't an issue for physical metals if I go that route.

My concern with palladium has always been the volatility. I know it has significant industrial demand, especially in auto catalysts, but that also makes it pretty susceptible to shifts in economic outlook and EV adoption. On the other hand, the supply side is pretty constrained, with most coming from Russia and South Africa, which adds a geopolitical premium. Thinking specifically about physical palladium bars or coins within the IRA, not ETFs. What are your thoughts on allocating around 5-10% of a precious metals IRA to palladium right now?

For those who've gone this route, what was your experience like? Did you stick with it through the dips, or did you find it too volatile for an IRA holding? Any specific dealers or custodians you'd recommend for palladium in a self-directed IRA? I’ve worked with Augusta and Goldco before for gold/silver, but curious if there are better options for PGMs. Appreciate any insights, good or bad.