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AcelRx Pharmaceuticals Inc (ACRX)Ownership Data

Short Interest History (%)

This is the historical short interest of AcelRx Pharmaceuticals Inc, as measured by the Short Percentage Of Float.

Date Short Interest
December 31, 201432.89
December 15, 201433.89
November 28, 201433.04
November 14, 201432.01
October 31, 201430.86
October 15, 201433.24
September 30, 201436.68
September 15, 201434.7
August 29, 201433.41
August 15, 201432.34
July 31, 201433.17
July 15, 201429.36
June 30, 201425.47
June 13, 201421.88
May 30, 201424.35
May 15, 201424.21
April 30, 201423.85
April 15, 201422.98
March 31, 201424.09
March 14, 201423.51
February 28, 201423.87
February 14, 201424.22
January 31, 201422.68
January 15, 201436.94
December 31, 201338.29
December 13, 201336.53
November 29, 201332.7
November 15, 201331.4
October 31, 201324.24
October 15, 201322.38
September 30, 201320.92
September 13, 201321.05
August 30, 201320.4
August 15, 201323.16
July 31, 201322.65
July 15, 201321.83
June 28, 201316.79
June 14, 201316.11
May 31, 201314.12
May 15, 201310.66
April 30, 201310.72
April 15, 201310.38
March 28, 20139.58
March 15, 20139.09
February 28, 20138.84
February 15, 20138.26
January 31, 20135.26
January 15, 201323.63
December 31, 201223.76
December 14, 201218.61
November 30, 20127.79
November 15, 20120.17
October 31, 20120.15
October 15, 20120.14
September 28, 20120.22
September 14, 20120.09
August 31, 20120.08
August 15, 20120.07
July 31, 20120.07
July 13, 20120.1
June 29, 20120.09
June 15, 20120.07
May 31, 20120.14
May 15, 20120.15
April 30, 20120.11
April 13, 20120.08
March 30, 20120.09
March 15, 20120.07
February 29, 20120.05
February 15, 20120.09
January 31, 20120.05
January 13, 20120.06
December 30, 20110.07
December 15, 20110.05
November 30, 20110.07
November 15, 20110.05
October 31, 20110.06
October 14, 20110.04
September 30, 20110.1
September 15, 20110.08
August 31, 20110.08
August 15, 20110.05
July 29, 20110.04
July 15, 20110.09
June 30, 20110.09
June 15, 20110.03
May 31, 20110.06
May 13, 20110.09
April 29, 20110.11
April 15, 20110.03
March 31, 20110.04
March 15, 20110.15
February 28, 20110.09

Institutional Ownership History (%)

This the Institutional Ownership History of AcelRx Pharmaceuticals IncPeter Lynch prefers to buy companies with low institutional ownership.

Date Institutional Ownership
December 31, 201481
November 30, 201481
October 31, 201482
September 30, 201485
August 31, 201486
July 31, 201485
June 30, 201491
May 31, 201491
April 30, 201478
March 31, 201471
February 28, 201480
January 31, 201480
December 31, 201372
November 30, 201371
October 31, 201382
September 30, 201374
August 31, 201372
July 31, 201370
June 30, 201376
May 31, 201375
April 30, 201375
March 31, 201360
February 28, 201381
October 31, 201279
September 30, 201278
August 31, 201279
July 31, 201290
June 30, 201279
May 31, 201290
April 30, 201254
March 31, 20128
February 29, 20128
January 31, 20128
December 31, 20118
November 30, 20118
October 31, 20118
September 30, 20118
August 31, 20118
July 31, 20118
June 30, 20118
May 31, 20118
April 30, 20116
March 31, 20116

Insider ownership (%)

This is the historical insider ownership of AcelRx Pharmaceuticals Inc. It is usually better to buy companies with large insider ownership. The company insiders' interest are more aligned with external shareholders in this case.

Date Insider Ownership
December 31, 20142
November 30, 20142
October 31, 20142
September 30, 20142
August 31, 20142
July 31, 20142
June 30, 20142
May 31, 20142
March 31, 20145
February 28, 20145
January 31, 20145
December 31, 20135
November 30, 20135
October 31, 20135
September 30, 20135
August 31, 20135
July 31, 20135
June 30, 20135
May 31, 20135
April 30, 20134
March 31, 20134
January 31, 20134
November 30, 20124
October 31, 20124
September 30, 20124
August 31, 20124
July 31, 20124
June 30, 20124
May 31, 20124
April 30, 20124
March 31, 20124
February 29, 20124
January 31, 20124
December 31, 20114
November 30, 20114
October 31, 20114
September 30, 20114
August 31, 20114
July 31, 20114
June 30, 20114
May 31, 20114
April 30, 20114
March 31, 20114
February 28, 20114

Top Direct Holders

HolderPositionShares% of Shares
Outstanding
Report Date
Dr. Pamela P. PalmerChief Medical Officer326,3940.75%2011-06-09
Thomas A. SchreckDirector300,9510.69%2011-08-29
Mr. Richard A. KingCEO134,5670.31%2014-03-02
Mr. Adrian AdamsDirector75,0000.17%2013-05-24
Mr. Lawrence G. HamelN/A64,3530.15%2014-07-17
Mark G. EdwardsDirector60,0000.14%2014-03-07
Badri DasuN/A22,530less than 0.1%2014-03-02
James H. WelchCFO15,000less than 0.1%2011-09-06
Mr. Howard B. RosenN/A4,394less than 0.1%2011-03-02

Top Fund Holders

HolderSharesReport Date% of Shares
Outstanding
% of Total
Assets Managed
Market Value
Perceptive Advisors LLC6,574,0602014-09-3015.043.8636,092,000
Three Arch Management IV LLC5,839,7222014-06-0913.480.0053,725,442
Three Arch Management III LLC3,527,3192014-06-098.140.0032,451,335
Skyline Venture Management IV LLC2,851,9332014-06-096.580.0026,237,784
Alta Partners2,507,9742014-06-095.790.0023,073,361
Palo Alto Investors, LLC1,622,6542014-09-303.710.678,908,000
Granahan Investment Management Inc..1,541,9842014-12-313.530.3010,378,000
BlackRock Fund Advisors1,127,8772014-09-302.580.006,192,000
Cormorant Asset Management, LLC1,000,0002014-09-302.291.135,490,000
Vanguard Group, Inc.853,6242014-09-301.950.004,687,000

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