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At NuStar Energy LP (NS), a filing with the SEC revealed that on Tuesday, Director William E. Greehey purchased 413,736 shares of NS, at a cost of $24.17 each, for a total investment of $10M. Bargain hunters can bag NS even cheaper than Greehey did, with shares changing hands as low as $22.72 at last check today which is 6.0% under Greehey's purchase price. NuStar Energy LP is trading off about 1.2% on the day Friday. Before this latest buy, Greehey purchased NS at 3 other times during the past twelve months, for a total cost of $4.03M at an average of $40.27 per share.

And on Wednesday, Director Dane Andreeff bought $101,025 worth of Helius Medical Technologies Inc (HSDT), buying 10,000 shares at a cost of $10.10 a piece. Before this latest buy, Andreeff purchased HSDT on 2 other occasions during the past year, for a total cost of $930,358 at an average of $2.20 per share. Helius Medical Technologies Inc is trading off about 2.1% on the day Friday. Bargain hunters can snag HSDT at a price even lower than Andreeff did, with shares trading as low as $9.72 at last check today — that's 3.8% under Andreeff's purchase price.

For MarketNewsVideo.com, I'm Sayoko Murase.