tiprankstipranks
TipRanksTop Financial ExpertsInsidersBrian S. Posner

Brian S. Posner Insider Profile

4 Followers
Brian S. Posner, Director at Arch Capital Group, holds 13.50K shares in Dyne Therapeutics (Ticker: DYN), holds 125.10K shares in Arch Capital Group (Ticker: ACGL), holds 8.18K shares in Biogen (Ticker: BIIB). Most recently, Brian S. Posner Bought ― shares of Dyne Therapeutics on Mar 13, 2026 for an estimated value of $38.70K.
See the Hottest Stocks Based on Insider Trading >
tipranks
Brian S. Posner

Brian S. Posner
Arch Capital Group (ACGL)
Director

Ranked #4,738 out of 106,487 Corporate Insiders

Profitable Transactions

77%
10 out of 13 Profitable Transactions

Average Return

+29.80%
Average return per transaction
Time Frame
1 Year
Compare to
No Benchmark
How are Insiders Ranked?

Insider Holdings

$14M
86.56%
11.12%
1.78%
0.54%
0.00% Others
A breakdown of Brian S. Posner's holdings
See the Top Stocks by Insiders

Insider Roles

Arch Capital Group
(ACGL)
Director
Biogen
(BIIB)
Director
Dyne Therapeutics
(DYN)
Director
LMP Capital and Income Fund Inc
(SCD)
Officer of the Adviser
+1 other positions
Roles that Brian S. Posner holds in companies
See the Top Corporate Insiders

Most Profitable Insider Trade

Stock:
Arch Capital Group
(ACGL)
Rating:Informative Buy
Date:May 15, 2020 - May 15, 2021
Return:+74.80%
The most profitable trade made by Brian S. Posner
See the Latest Stocks Traded by Insiders

Brian S. Posner's Trading History

Company Name
Last Transaction Date
Insider Position
Last Transaction
Last Transaction Amount
Holding Value
ACGL
Arch Capital Group
Mar 12, 2026
Director
Informative Sell
51.33K
$11.71M
BIVV
Bioverativ Inc
Mar 08, 2018
―
Uninformative Sell
―
$0.00
DYN
Dyne Therapeutics
Mar 13, 2026
Director
Informative Buy
38.70K
$240.97K
BIIB
Biogen
Jul 02, 2021
Director
Uninformative Buy
―
$1.50M
SCD
LMP Capital and Income Fund Inc
―
Officer of the Adviser
―
$73.32K
BGMD
BG Medicine
Nov 20, 2012
Director
Informative Buy
11.60K
―
List of latest transactions for each holding click on a transaction to see Brian S. Posner's performance on stock
See All Insider Trading from Today

You May Also Like

Meet our Smart Portfolio. See what top analysts say about your stocks.Get a breakdown of the different strategies based on detected insider trading activity.Find the best performing Analyst in each sector. Follow them so you never miss a recommendation.

Brian S. Posner insider profile FAQ

What is the percentage of profitable transactions made by Brian S. Posner?
The percentage of profitable transactions made by Brian S. Posner is 77%.
    What is the average return per transaction made by Brian S. Posner?
    The average return per transaction made by Brian S. Posner is 29.80%.
      What stocks does Brian S. Posner hold?
      Brian S. Posner holds: ACGL, BIVV, DYN, BIIB, SCD, BGMD stocks.
        What was Brian S. Posner’s latest transaction?
        Brian S. Posner latest transaction was an Informative Buy of $38.70K.
          What was Brian S. Posner's most profitable transaction?
          Brian S. Posner’s most profitable transaction was an Informative Buy of ACGL stock on May 15, 2020. The return on the trade was 74.80%.
            What is Brian S. Posner's role in Arch Capital Group?
            Brian S. Posner's role in Arch Capital Group is Director.
              How can I follow the stock ratings of top corporate insiders?
              Head over to our Expert Center to see a list of the Top 100 corporate insiders and follow the corporate insiders of your choice. Visit their profiles for more details about their stock transactions and see how they perform on a stock-by-stock basis.