Shares in IperionX Ltd (ASX: IPX) have tumbled sharply on Monday, with the titanium producer extending a steep sell-off that has wiped out a large portion of its recent gains.
The company's shares are down a massive 22.62% to $4.07, leaving the stock more than 40% lower over the past week.
Let's take a closer look at what appears to be driving the sell-off.

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ASX queries sharp share price fall
The Australian Securities Exchange (ASX) issued a price query after the company's shares dropped rapidly in recent sessions.
In response, IperionX said it was not aware of any undisclosed information that could explain the fall in its share price.
The company confirmed it remained compliant with ASX listing rules and had no additional market-sensitive information to release.
That response suggests the sell-off is not linked to a new announcement or previously undisclosed development.
Investors take profits after recent results
Instead, the sharp decline appears to be driven by investors offloading shares following the company's latest results, which were released last week.
IperionX's share price had rallied strongly in recent months, climbing to a high above $7 earlier in March before reversing quickly in the days following the report.
Since then, the stock has recorded multiple double-digit daily losses, with heavy trading volumes indicating significant selling pressure.
The company's shares were down 14.29% on Thursday, then fell another 14.05% on Friday, extending the decline into Monday.
Government support and titanium supply progress
Despite the recent share price volatility, IperionX continues to advance projects aimed at building a domestic US titanium supply chain.
The company recently confirmed that the US Department of War had obligated the final US$4.6 million of funding under the Industrial Base Analysis and Sustainment (IBAS) program. This funding supports the development of a domestic US titanium supply chain.
Separately, the US Government transferred approximately 290 metric tonnes of high-quality titanium alloy scrap to IperionX at no cost.
The material is expected to provide roughly 1.5 years of titanium feedstock for the company's current scrap-processing capacity.
IperionX also announced that it had received a US$3.3 million prototype purchase order from a major German defence company, Rheinmetall. The order is for the production of titanium components for US Army applications.
Foolish bottom line
With its share price having surged earlier this year, the company's latest results appear to have prompted profit-taking from investors.
This has triggered a sharp reversal in the stock.
Whether the selling pressure continues will depend on how quickly IperionX can convert its government partnerships into larger commercial agreements.