SLR responds much more to gold priced in USD rather then AUD as per below. I'm not sure why that's the case as RMS for example while still more responsive to USD gold price also follows the AUD gold price more broadly compared with SLR which is odd as both Aus based miners. Looking at current share prices of SLR/RMS ($1.36/$1.515) you can see the discrepancy. (Fundamentals not withstanding).