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Buy HALO
Halozyme Therapeutics Stock Insider Power
Based on the 100 latest insides trades, we have calculated the insider power to be negative at -68.58. In total, the insiders bought 721.01K and sold 251.08K HALO shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.
Insider Power
|
-68.58 |
| ● Buy | 721.01K shares |
| ● Sell | 251.08K shares |
|
54% Buy Activity
Weak Negative Correlation
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Historical Insider Trades
| Date | Type | Person | Role | Amount |
|---|---|---|---|---|
|
Apr 01, 2026 Sell |
Torley Helen President And CEO |
1 000 Value: $65.7K |
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Apr 01, 2026 Sell |
Torley Helen President And CEO |
19 000 Value: $1.24M |
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Mar 23, 2026 Buy |
Ramsay David A Officer |
0 Value: $0 |
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Mar 10, 2026 Buy |
Caudill Cortney SVP, Chief Operating Officer |
1 546 Value: $51.8K |
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Mar 10, 2026 Buy |
Caudill Cortney SVP, Chief Operating Officer |
1 546 Value: $51.8K |
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Mar 10, 2026 Sell |
Caudill Cortney SVP, Chief Operating Officer |
8 857 Value: $599.1K |
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Mar 09, 2026 Buy |
Caudill Cortney SVP, Chief Operating Officer |
20 000 Value: $670.2K |
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Mar 09, 2026 Buy |
Caudill Cortney SVP, Chief Operating Officer |
20 000 Value: $670.2K |
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Mar 09, 2026 Sell |
Caudill Cortney SVP, Chief Operating Officer |
17 900 Value: $1.21M |
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Mar 09, 2026 Sell |
Caudill Cortney SVP, Chief Operating Officer |
2 100 Value: $143.3K |
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Mar 04, 2026 Sell |
Torley Helen President And CEO |
2 671 Value: $189.5K |
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Mar 04, 2026 Buy |
Torley Helen President And CEO |
10 000 Value: $120.7K |
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Mar 04, 2026 Buy |
Torley Helen President And CEO |
10 000 Value: $120.7K |
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Mar 04, 2026 Sell |
Torley Helen President And CEO |
7 329 Value: $512.6K |
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Mar 03, 2026 Buy |
Torley Helen President And CEO |
20 000 Value: $241.4K |
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Mar 03, 2026 Sell |
Torley Helen President And CEO |
13 481 Value: $928.2K |
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Mar 03, 2026 Sell |
Torley Helen President And CEO |
6 519 Value: $452.0K |
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Mar 03, 2026 Buy |
Torley Helen President And CEO |
20 000 Value: $241.4K |
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Mar 02, 2026 Buy |
Torley Helen President And CEO |
20 000 Value: $241.4K |
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Mar 02, 2026 Sell |
Torley Helen President And CEO |
4 100 Value: $283.7K |
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Mar 02, 2026 Sell |
Torley Helen President And CEO |
15 322 Value: $1.07M |
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|
Mar 02, 2026 Sell |
Torley Helen President And CEO |
578 Value: $40.7K |
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Feb 23, 2026 Buy |
Snyder Mark Howard SVP, Chief Legal Officer |
7 011 Value: $495.3K |
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Feb 20, 2026 Buy |
Caudill Cortney SVP, Chief Operating Officer |
2 666 Value: $189.2K |
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Feb 20, 2026 Buy |
Caudill Cortney SVP, Chief Operating Officer |
2 666 Value: $189.2K |
About Insider Power
Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.
It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.
While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.
* October 6th, 2025 - Tested on 5562 stocks
