Grandisson Marc has been a registered insider at 2 firms since 2004.
As Chairman at Howard Hughes Holdings Inc., Grandisson Marc last made a transaction on 9/23/2026.
As Chief Executive Officer at Arch Capital Group Ltd., Grandisson Marc last made a transaction on 11/6/2023.
InsiderInsights.com Purchase Scorecard
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Transaction Date
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Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
Time From
Purchases
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
| -- |
-- |
-- |
-- |
-- |
1 Year |
-- |
-- |
-- |
-- |
-- |
| -- |
-- |
-- |
-- |
-- |
9 Month |
-- |
-- |
-- |
-- |
-- |
| -- |
-- |
-- |
-- |
-- |
6 Month |
-- |
-- |
-- |
-- |
-- |
| -- |
-- |
-- |
-- |
-- |
3 Month |
-- |
-- |
-- |
-- |
-- |
| 1 |
100% |
9% |
-- |
-- |
1 Month |
1 |
0% |
-- |
-- |
-- |
| 1 |
100% |
12% |
-- |
-- |
1 Week |
1 |
0% |
-- |
-- |
-- |
InsiderInsights.com Sales Scorecard
|
|
|
Transaction Date
|
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
Time From
Sales
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
| -- |
-- |
-- |
-- |
-- |
1 Year |
-- |
-- |
-- |
-- |
-- |
| -- |
-- |
-- |
-- |
-- |
9 Month |
-- |
-- |
-- |
-- |
-- |
| -- |
-- |
-- |
-- |
-- |
6 Month |
-- |
-- |
-- |
-- |
-- |
| -- |
-- |
-- |
-- |
-- |
3 Month |
-- |
-- |
-- |
-- |
-- |
| -- |
-- |
-- |
-- |
-- |
1 Month |
-- |
-- |
-- |
-- |
-- |
| -- |
-- |
-- |
-- |
-- |
1 Week |
-- |
-- |
-- |
-- |
-- |
| Scorecards Updated 11/3/2026 12:14 PM EST |
Latest Transaction Date: |
9/23/2026 |
| Average days between Transaction and Entered Dates: |
1 |
InsiderInsights.com Purchase Scorecard
|
|
|
Transaction Date
|
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
Time From
Purchases
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
| 6 |
100% |
35% |
32% |
59 |
1 Year |
6 |
0% |
-- |
-- |
-- |
| 6 |
100% |
21% |
17% |
34 |
9 Month |
6 |
0% |
-- |
-- |
-- |
| 6 |
83% |
14% |
11% |
34 |
6 Month |
6 |
0% |
-- |
-- |
-- |
| 6 |
50% |
4% |
1% |
25 |
3 Month |
6 |
0% |
-- |
-- |
-- |
| 6 |
67% |
2% |
1% |
15 |
1 Month |
6 |
0% |
-- |
-- |
-- |
| 6 |
50% |
2% |
-0% |
14 |
1 Week |
6 |
0% |
-- |
-- |
-- |
InsiderInsights.com Sales Scorecard
|
|
|
Transaction Date
|
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
Time From
Sales
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
| 22 |
23% |
7% |
7% |
72 |
1 Year |
22 |
0% |
-- |
-- |
-- |
| 22 |
5% |
12% |
5% |
39 |
9 Month |
22 |
0% |
-- |
-- |
-- |
| 22 |
32% |
7% |
5% |
26 |
6 Month |
22 |
0% |
-- |
-- |
-- |
| 22 |
27% |
3% |
2% |
23 |
3 Month |
22 |
0% |
-- |
-- |
-- |
| 22 |
41% |
1% |
0% |
15 |
1 Month |
22 |
0% |
-- |
-- |
-- |
| 22 |
50% |
-0% |
0% |
9 |
1 Week |
22 |
0% |
-- |
-- |
-- |
| Scorecards Updated 11/3/2026 12:14 PM EST |
Latest Transaction Date: |
11/6/2023 |
| Average days between Transaction and Entered Dates: |
3 |
