Amkor Technology, Inc.
US ˙ NasdaqGS ˙ US0316521006

Introduction

This page provides a comprehensive analysis of the known insider trading history of John D Liu. Insiders are officers, directors, or significant investors in a company. It is illegal for insiders to make trades in their companies based on specific, non-public information. This does not mean it is illegal for them to make any trades in their own companies. However, they must report all trades to the SEC via a Form 4. Despite these restrictions, academic research suggests that insiders - in general - tend to outperform the market in their own companies.

Average Trade Profitability

The average trade profitability is the average return of all the open market purchases made by the insider in the last three years. To calculate this, we examine every open-market, unplanned purchase made by the insider, excluding all trades that were marked as part of a 10b5-1 trading plan. We then calculate the average performance of those trades over 3, 6, and 12 months, averaging each of those durations to generate a final performance metric for each trade. Finally, we average all of the performance metrics to calculate a performance metric for the insider. This list only includes insiders that have made at least three trades in the last two years.

If this insiders trade profitability is "N/A", then the insider either has not made any open-market purchases in the last three years, or the trades they’ve made are too recent to calculate a reliable performance metric.

Update Frequency: Daily

See the list of most profitable insider traders.

Companies with Reported Insider Positions

The SEC filings indicate John D Liu has reported holdings or trades in the following companies:

Security Title Latest Reported Holdings
US:RSVR / Reservoir Media, Inc. 14,282
US:AMKR / Amkor Technology, Inc. Director 2,983
US:WHR / Whirlpool Corporation Director 4,435
US:GHL / Greenhill & Co Inc Director 0
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by John D Liu. Non-planned trade are trades that were not made as part of a 10b5-1 trading plan. The stock performance is charted as cumulative percent change in share price. For example, if an insider trade was made on January 1, 2019, the chart will show the daily percent change of the security to the present day. If the share price were to go from $10 to $15 during this time, the cumulative percent change in share price would be 50%. A change in price from $10 to $20 would be 100%, and a change in price of $10 to $5 would be -50%.

Ultimately, we are trying to determine how closely the insider’s trades correlate to excess returns (positive or negative) in the share price in order to see if the insider is timing their trades to profit from insider information. Consider the situation where an insider was doing this. In this situation, we would expect either (a) positive returns after purchases, or (b) negative returns after sales. In the case of (a), the PURCHASE chart would show a series of upwardly sloping curves, indicating positive returns after each purchase transaction. In the case of (b), the SALE chart would show a series of downward sloping curves, indicating negative returns after each sale transaction.

However, this alone is not enough to draw conclusions. If, for example, the share price of the company was in a non-cyclical climb over many years, then we would expect all the post-purchase plots to be upwardly sloping. Likewise, non-cyclical declines over many years would result in downward sloping post-trade plots. Neither of these charts would suggest insider trading activity.

The strongest indicator would be a situation where the share price was extremely cyclical, and there were both positive signals in the PURCHASE chart and negative plots on the SALE chart. This situation would be highly suggestive of an insider that was timing trades to their financial advantage.

Insider Purchases AMKR / Amkor Technology, Inc. - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made in AMKR / Amkor Technology, Inc.. This analysis helps to understand if the insider consistently generates abnormal returns, and is worth following. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Ticker Insider Reported
Shares
Reported
Price
Adjusted
Shares
Adjusted
Price
Cost Basis Days to
Max
Price at
Max
Max
Profit ($)
Max Return (%)
There are no known unplanned open-market trades for this insider and security combination

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

AMKR / Amkor Technology, Inc. Insider Trades
Insider Sales AMKR / Amkor Technology, Inc. - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made in AMKR / Amkor Technology, Inc.. A consistent pattern of loss avoidance may suggest that future sale transactions may predict declines in price. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market sales that were not part of an automatic trading plan.

Trade Date Ticker Insider Reported
Shares
Reported
Price
Adjusted
Shares
Adjusted
Price
Cost Basis Days to
Min
Price at
Min
Max Loss
Avoided ($)
Max Loss
Avoided (%)
There are no known unplanned open-market trades for this insider and security combination

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

AMKR / Amkor Technology, Inc. Insider Trades
Insider Purchases RSVRW / Reservoir Media, Inc. - Equity Warrant - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made in AMKR / Amkor Technology, Inc.. This analysis helps to understand if the insider consistently generates abnormal returns, and is worth following. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Ticker Insider Reported
Shares
Reported
Price
Adjusted
Shares
Adjusted
Price
Cost Basis Days to
Max
Price at
Max
Max
Profit ($)
Max Return (%)
2022-06-30 RSVR Essex Equity Joint Investment Vehicle, LLC 17,078 6.4877 17,078 6.4877 110,797 40 7.5200 17,631 15.91
2022-06-30 RSVR Richmond Hill Capital Partners, LP 7,319 6.4877 7,319 6.4877 47,483
2022-06-29 RSVR Essex Equity Joint Investment Vehicle, LLC 92,413 6.5983 92,413 6.5983 609,769
2022-06-29 RSVR Richmond Hill Capital Partners, LP 39,605 6.5983 39,605 6.5983 261,326
2022-03-10 RSVR Richmond Hill Capital Partners, LP 354 7.4869 354 7.4869 2,650
2022-03-10 RSVR Essex Equity Joint Investment Vehicle, LLC 826 7.4869 826 7.4869 6,184
2022-03-09 RSVR Richmond Hill Capital Partners, LP 10,552 7.3799 10,552 7.3799 77,873
2022-03-09 RSVR Essex Equity Joint Investment Vehicle, LLC 24,620 7.3799 24,620 7.3799 181,693
2022-03-08 RSVR Richmond Hill Capital Partners, LP 39,821 7.1919 39,821 7.1919 286,389
2022-03-08 RSVR Essex Equity Joint Investment Vehicle, LLC 92,914 7.1919 92,914 7.1919 668,228
2022-03-04 RSVR Essex Equity Joint Investment Vehicle, LLC 23,646 7.4299 23,646 7.4299 175,687
2022-03-04 RSVR Richmond Hill Capital Partners, LP 10,134 7.4299 10,134 7.4299 75,295
2022-03-03 RSVR Essex Equity Joint Investment Vehicle, LLC 17,770 7.4212 17,770 7.4212 131,875
2022-03-03 RSVR Richmond Hill Capital Partners, LP 7,615 7.4212 7,615 7.4212 56,512
2022-02-24 RSVR Richmond Hill Capital Partners, LP 5,548 6.9207 5,548 6.9207 38,396
2022-02-24 RSVR Essex Equity Joint Investment Vehicle, LLC 12,945 6.9207 12,945 6.9207 89,588
2022-02-14 RSVR Richmond Hill Capital Partners, LP 2,923 7.0160 2,923 7.0160 20,508
2022-02-14 RSVR Richmond Hill Investments, LLC 6,821 7.0160 6,821 7.0160 47,856
2022-02-11 RSVR Richmond Hill Capital Partners, LP 55,518 6.7380 55,518 6.7380 374,080
2022-02-11 RSVR Richmond Hill Investments, LLC 129,543 6.7380 129,543 6.7380 872,861

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

RSVRW / Reservoir Media, Inc. - Equity Warrant Insider Trades
Insider Sales RSVRW / Reservoir Media, Inc. - Equity Warrant - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made in AMKR / Amkor Technology, Inc.. A consistent pattern of loss avoidance may suggest that future sale transactions may predict declines in price. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market sales that were not part of an automatic trading plan.

Trade Date Ticker Insider Reported
Shares
Reported
Price
Adjusted
Shares
Adjusted
Price
Cost Basis Days to
Min
Price at
Min
Max Loss
Avoided ($)
Max Loss
Avoided (%)
There are no known unplanned open-market trades for this insider and security combination

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

RSVRW / Reservoir Media, Inc. - Equity Warrant Insider Trades
Insider Trading History

This table shows the complete list of insider trades made by John D Liu as disclosed to the Securities Exchange Commission (SEC).

File Date Tran Date Form Ticker Security Code 10b5-1 Shares Remaining Shares Percent
Change
Share
Price
Tran
Value
Remaining
Value
2025-08-19 2025-08-15 4 RSVR Reservoir Media, Inc.
Common stock, $0.0001 par value
A - Award 651 14,282 4.78 7.67 4,993 109,543
2025-08-19 2025-08-15 4 RSVR Reservoir Media, Inc.
Common stock, $0.0001 par value
A - Award 10,430 13,631 325.84
2025-06-10 2025-06-06 4 RSVR Reservoir Media, Inc.
Common stock, $0.0001 par value
A - Award 684 14,436 4.97 7.30 4,993 105,383
2025-05-16 2025-05-14 4 AMKR AMKOR TECHNOLOGY, INC.
Common Stock
M - Exercise 2,983 2,983
2025-04-16 2025-04-15 4 WHR WHIRLPOOL CORP /DE/
Common Stock
A - Award 2,014 4,435 83.19
2025-02-19 2025-02-14 4 RSVR Reservoir Media, Inc.
Common stock, $0.0001 par value
A - Award 621 13,752 4.73 8.04 4,993 110,566
2024-11-12 2024-11-08 4 RSVR Reservoir Media, Inc.
Common stock, $0.0001 par value
A - Award 555 13,131 4.41 9.00 4,995 118,179
2024-08-13 2024-08-09 4 RSVR Reservoir Media, Inc.
Common stock, $0.0001 par value
A - Award 702 12,576 5.91 7.12 4,998 89,541
2024-08-13 2024-08-09 4 RSVR Reservoir Media, Inc.
Common stock, $0.0001 par value
A - Award 11,235 11,874 1,758.22
2024-06-11 2024-06-07 4 RSVR Reservoir Media, Inc.
Common stock, $0.0001 par value
A - Award 639 18,841 3.51 7.82 4,997 147,337
2024-04-17 2024-04-16 4 WHR WHIRLPOOL CORP /DE/
Common Stock
A - Award 1,421 2,421 142.10
2024-02-21 2024-02-16 4 RSVR Reservoir Media, Inc.
Common stock, $0.0001 par value
A - Award 718 18,202 4.11 6.96 4,997 126,686
2023-12-01 2023-11-30 4 GHL GREENHILL & CO INC
Common Stock
D - Sale to Issuer -13,149 0 -100.00
2023-11-21 2023-11-17 4 RSVR Reservoir Media, Inc.
Common stock, $0.0001 par value
A - Award 833 17,484 5.00 6.00 4,998 104,904
2023-11-16 2023-11-14 4 GHL GREENHILL & CO INC
Common Stock
G - Gift -19,636 13,149 -59.89
2023-08-21 2023-08-17 4 RSVR Reservoir Media, Inc.
Common stock, $0.0001 par value
A - Award 934 16,651 5.94 5.35 4,997 89,083
2023-08-21 2023-08-17 4 RSVR Reservoir Media, Inc.
Common stock, $0.0001 par value
A - Award 14,953 15,717 1,957.20
2023-06-06 2023-06-02 4 RSVR Reservoir Media, Inc.
Common stock, $0.0001 par value
A - Award 764 16,449 4.87 6.54 4,997 107,576
2023-05-04 2022-06-29 5 RSVR Reservoir Media, Inc.
Common stock, $0.0001 par value
J - Other 11,940 13,604,733 0.09 6.70 79,998 91,151,711
2023-04-05 2023-04-03 4 GHL GREENHILL & CO INC
Common Stock
A - Award 1,762 32,785 5.68
2023-02-22 2023-02-17 4 RSVR Reservoir Media, Inc.
Common stock, $0.0001 par value
A - Award 715 15,685 4.78 6.99 4,998 109,638
2023-01-05 2023-01-04 4 GHL GREENHILL & CO INC
Common Stock
A - Award 1,524 31,023 5.17
2022-10-06 2022-10-04 4 GHL GREENHILL & CO INC
Common Stock
A - Award 2,630 29,499 9.79
2022-07-07 2022-07-05 4 GHL GREENHILL & CO INC
Common Stock
A - Award 1,695 26,869 6.73
2022-07-01 2022-06-30 4 RSVR Reservoir Media, Inc.
Common Stock, $0.001 par value
P - Purchase 17,078 418,576 4.25 6.49 110,797 2,715,596
2022-07-01 2022-06-29 4 RSVR Reservoir Media, Inc.
Common Stock, $0.0001 par value
P - Purchase 92,413 401,498 29.90 6.60 609,769 2,649,204
2022-07-01 2022-06-30 4 RSVR Reservoir Media, Inc.
Common Stock, $0.001 par value
P - Purchase 7,319 179,389 4.25 6.49 47,483 1,163,822
2022-07-01 2022-06-29 4 RSVR Reservoir Media, Inc.
Common Stock, $0.0001 par value
P - Purchase 39,605 172,070 29.90 6.60 261,326 1,135,369
2022-04-21 2022-04-19 4 WHR WHIRLPOOL CORP /DE/
Deferred Stock Units
A - Award 849 13,752 6.58
2022-04-06 2022-04-05 4 GHL GREENHILL & CO INC
Common Stock
A - Award 1,010 25,174 4.18
2022-03-10 2022-03-10 4 RSVR Reservoir Media, Inc.
Common Stock, $0.001 par value
P - Purchase 354 132,465 0.27 7.49 2,650 991,752
2022-03-10 2022-03-09 4 RSVR Reservoir Media, Inc.
Common Stock, $0.001 par value
P - Purchase 10,552 132,111 8.68 7.38 77,873 974,966
2022-03-10 2022-03-08 4 RSVR Reservoir Media, Inc.
Common Stock, $0.0001 par value
P - Purchase 39,821 121,559 48.72 7.19 286,389 874,240
2022-03-10 2022-03-10 4 RSVR Reservoir Media, Inc.
Common Stock, $0.001 par value
P - Purchase 826 309,085 0.27 7.49 6,184 2,314,088
2022-03-10 2022-03-09 4 RSVR Reservoir Media, Inc.
Common Stock, $0.001 par value
P - Purchase 24,620 308,259 8.68 7.38 181,693 2,274,921
2022-03-10 2022-03-08 4 RSVR Reservoir Media, Inc.
Common Stock, $0.0001 par value
P - Purchase 92,914 283,639 48.72 7.19 668,228 2,039,903
2022-03-07 2022-03-04 4 RSVR Reservoir Media, Inc.
Common Stock, $0.001 par value
P - Purchase 23,646 190,725 14.15 7.43 175,687 1,417,068
2022-03-07 2022-03-03 4 RSVR Reservoir Media, Inc.
Common Stock, $0.0001 par value
P - Purchase 17,770 167,079 11.90 7.42 131,875 1,239,927
2022-03-07 2022-03-04 4 RSVR Reservoir Media, Inc.
Common Stock, $0.001 par value
P - Purchase 10,134 81,738 14.15 7.43 75,295 607,305
2022-03-07 2022-03-03 4 RSVR Reservoir Media, Inc.
Common Stock, $0.0001 par value
P - Purchase 7,615 71,604 11.90 7.42 56,512 531,388
2022-02-28 2022-02-24 4 RSVR Reservoir Media, Inc.
Common Stock, $0.0001 par value
P - Purchase 5,548 63,989 9.49 6.92 38,396 442,849
2022-02-28 2022-02-24 4 RSVR Reservoir Media, Inc.
Common Stock, $0.0001 par value
P - Purchase 12,945 149,309 9.49 6.92 89,588 1,033,323
2022-02-15 3 RSVR Reservoir Media, Inc.
Common Stock, $0.0001 par value
58,441
2022-02-15 2022-02-14 4 RSVR Reservoir Media, Inc.
Common Stock, $0.0001 par value
P - Purchase 2,923 58,441 5.26 7.02 20,508 410,022
2022-02-15 2022-02-11 4 RSVR Reservoir Media, Inc.
Common Stock, $0.0001 par value
P - Purchase 55,518 55,518 6.74 374,080 374,080
2022-02-15 3 RSVR Reservoir Media, Inc.
Common Stock, $0.0001 par value
136,364
2022-02-15 2022-02-14 4 RSVR Reservoir Media, Inc.
Common Stock, $0.0001 par value
P - Purchase 6,821 136,364 5.27 7.02 47,856 956,730
2022-02-15 2022-02-11 4 RSVR Reservoir Media, Inc.
Common Stock, $0.0001 par value
P - Purchase 129,543 129,543 6.74 872,861 872,861
2022-01-05 2022-01-04 4 GHL GREENHILL & CO INC
Common Stock
A - Award 871 24,164 3.74
2021-10-07 2021-10-05 4 GHL GREENHILL & CO INC
Common Stock
A - Award 1,069 23,293 4.81
2021-07-28 3 RSVR Reservoir Media, Inc.
Common Stock
13,592,793
2021-07-06 2021-07-02 4 GHL GREENHILL & CO INC
Common Stock
A - Award 1,004 22,224 4.73
2021-04-22 2021-04-20 4 WHR WHIRLPOOL CORP /DE/
Deferred Stock Units
A - Award 634 12,550 5.32
2021-04-06 2021-04-06 4 GHL GREENHILL & CO INC
Common Stock
A - Award 948 21,220 4.68
2021-01-06 2021-01-05 4 GHL GREENHILL & CO INC
Common Stock
A - Award 1,287 20,272 6.78
2020-10-06 2020-10-02 4 GHL GREENHILL & CO INC
Common Stock
A - Award 1,377 18,985 7.82
2020-07-09 2020-07-08 4 GHL GREENHILL & CO INC
Common Stock
A - Award 1,564 17,608 9.75
2020-04-23 2020-04-21 4 WHR WHIRLPOOL CORP /DE/
Deferred Stock Units
A - Award 1,476 11,577 14.61
2020-04-06 2020-04-06 4 GHL GREENHILL & CO INC
Common Stock
A - Award 1,588 16,044 10.99
2020-01-02 2020-01-02 4 GHL GREENHILL & CO INC
Common Stock
A - Award 915 14,456 6.76
2019-10-03 2019-10-02 4 GHL GREENHILL & CO INC
Common Stock
A - Award 1,191 13,541 9.64
2019-08-05 2019-08-05 4 GHL GREENHILL & CO INC
Common Stock
A - Award 1,150 12,350 10.27
2019-04-18 2019-04-16 4 WHR WHIRLPOOL CORP /DE/
Deferred Stock Units
A - Award 1,055 9,729 12.16
2019-04-05 2019-04-04 4 GHL GREENHILL & CO INC
Common Stock
A - Award 726 11,200 6.93
2019-01-03 2019-01-03 4 GHL GREENHILL & CO INC
Common Stock
A - Award 640 10,474 6.51
2018-10-02 2018-10-02 4 GHL GREENHILL & CO INC
Common Stock
A - Award 593 9,834 6.42
2018-07-03 2018-07-03 4 GHL GREENHILL & CO INC
Common Stock
A - Award 550 9,241 6.33
2018-04-19 2018-04-17 4 WHR WHIRLPOOL CORP /DE/
Deferred Stock Units
A - Award 846 8,370 11.24
2018-04-05 2018-04-04 4 GHL GREENHILL & CO INC
Common Stock
A - Award 845 8,691 10.77
2018-01-05 2018-01-03 4 GHL GREENHILL & CO INC
Common Stock
A - Award 801 7,846 11.37
2017-11-14 2017-11-14 4 GHL GREENHILL & CO INC
Common Stock
A - Award 836 7,045 13.46
2017-06-08 3 GHL GREENHILL & CO INC
Common Stock
12,418
2017-06-08 3 GHL GREENHILL & CO INC
Common Stock
12,418
2017-04-20 2017-04-18 4 WHR WHIRLPOOL CORP /DE/
Deferred Stock Units
A - Award 773 7,335 11.78
2016-04-21 2016-04-19 4 WHR WHIRLPOOL CORP /DE/
Deferred Stock Units
A - Award 657 6,412 11.42
2015-04-23 2015-04-21 4 WHR WHIRLPOOL CORP /DE/
Deferred Stock Units
A - Award 644 5,631 12.91
2014-04-17 2014-04-15 4 WHR WHIRLPOOL CORP /DE/
Deferred Stock Units
A - Award 792 4,898 19.29
2013-04-18 2013-04-16 4 WHR WHIRLPOOL CORP /DE/
Deferred Stock Units
A - Award 1,027 4,034 34.15
2012-04-19 2012-04-17 4 WHR WHIRLPOOL CORP /DE/
Deferred Stock Units
A - Award 1,617 2,937 122.53
2010-06-17 3 WHR WHIRLPOOL CORP /DE/
Common Stock
0
P
Open market or private purchase of non-derivative or derivative security
S
Open market or private sale of non-derivative or derivative security
A
Grant, award, or other acquisition of securities from the company (such as an option)
C
Conversion of derivative
D
Sale or transfer of securities back to the company
F
Payment of exercise price or tax liability using portion of securities received from the company
G
Gift of securities by or to the insider
K
Equity swaps and similar hedging transactions
M
Exercise or conversion of derivative security received from the company (such as an option)
V
A transaction voluntarily reported on Form 4
J
Other (accompanied by a footnote describing the transaction)