Optimizerx Corp

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Optimizerx Corp
TickerOPRX
CIK #0001448431
CUSIP68401U204
SectorTrade & Services - Services-Business Services, Nec
Address407 Sixth Street, Rochester, MI 48307
Source [EDGAR]
CIK Filing 2011 - 2025
[0001448431] 10-K
[0001448431] 10-Q
[0001448431] 3
[0001448431] 4
[0001448431] 8-K
[0001448431] D
[0001448431] SC 13D
[0001448431] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Whetstone Capital Advisors LLC Optimizerx Corp [2025-02-05] 0.0
Royce & Associates LP Optimizerx Corp [2025-01-28] 0.0
AWM Investment Company Inc Optimizerx Corp [2024-11-14] 5.9
Samjo Management LLC Optimizerx Corp [2024-11-13] 5.7
First Light Asset Management LLC Optimizerx Corp [2024-02-14] 9.52
Divisadero Street Capital Management LP Optimizerx Corp [2023-12-29] 5.2
Weintraub Michael Optimizerx Corp [2023-11-28] 7.6
First Light Asset Management LLC Optimizerx Corp [2023-06-09] 10.28
Vanguard Group Inc Optimizerx Corp [2022-02-10] 6.09
Poppel Harvey L Optimizerx Corp [2021-03-17] 4.6
Blair William & Co/IL Optimizerx Corp [2021-02-11] 5.2
Poppel Harvey L Optimizerx Corp [2021-01-12] 5.76
Avenir Corp Optimizerx Corp [2020-02-27] 5.06
BlackRock Inc Optimizerx Corp [2020-02-07] 6.6
Poppel Harvey L Optimizerx Corp [2020-01-13] 7.3
Poppel Harvey L Optimizerx Corp [2019-01-10] 8.26
AWM Investment Company Inc Optimizerx Corp [2018-06-08] 11.8
Park West Asset Management LLC Optimizerx Corp [2018-05-14] 5.9
Poppel Harvey L Optimizerx Corp [2018-01-08] 0.27
Wolverine Asset Management LLC Optimizerx Corp [2017-03-06] 7.3
Poppel Harvey L Optimizerx Corp [2017-01-17] 8.64
Poppel Harvey L Optimizerx Corp [2016-01-13] 7.34
WPP PLC Optimizerx Corp [2015-10-02] 20.8
CHEZ Ronald L Optimizerx Corp [2015-02-05] 6.8
Poppel Harvey L Optimizerx Corp [2015-01-12] 8.96
Goldman Capital Management Inc Optimizerx Corp [2014-10-24] 6.5
Poppel Harvey L Optimizerx Corp [2014-04-29] 5.42
Wolverine Asset Management LLC Optimizerx Corp [2014-03-21] 0.0
Radoff Bradley Louis Optimizerx Corp [2014-03-20] 13.9
Vicis Capital LLC Optimizerx Corp [2012-01-24] 6.3
Form 3/4/5 Filer 2011 - 2025
OptimizeRx Corp
Wasson Gregory D
Klema Cathy
Lang James Paul
Spangler Patrick D
Vos Ellen O'Connor
Silvestro Stephen L
Greco Theresa
Odence-Ford Marion
Febbo William J
Stelmakh Edward
Besch Doug
McCarthy Brian Clark
Halas GUS D
Inman Todd
Paramore Miriam J
Baker Douglas P
AWM Investment Company, Inc.
Hamilton Terrence
WPP plc
WPP Luxembourg Gamma Three S.a.r.l.
Archambault Bryan
Pinney Jack T
Harrell David
Dillon Brian J
Brooks James M
Radoff Bradley Louis
Lester David
Stastney Shadron L.
Form 13F Holdings
Firm Period DFND Voting Shares
Whetstone Capital Advisors LLC [2025-06-30] SOLE 1,508,303 1,508,303
BlackRock, Inc. [2025-06-30] SOLE 1,201,570 1,221,833
Vanguard Group Inc [2025-06-30] SOLE 0 897,188
Royce & Associates LP [2025-06-30] SOLE 790,640 790,640
Blair William & Co/IL [2025-06-30] SOLE 577,693 628,926
Rice Hall James & Associates LLC [2025-06-30] SOLE 569,716 607,560
Parkman Healthcare Partners LLC [2025-06-30] SOLE 507,423 507,423
Kennedy Capital Management LLC [2025-06-30] SOLE 472,472 472,472
Manatuck Hill Partners LLC [2025-06-30] SOLE 455,000 455,000
D. E. Shaw & Co., Inc. [2025-06-30] DFND 412,896 412,896
Geode Capital Management LLC [2025-06-30] DFND 399,548 399,548
State Street Corp [2025-06-30] DFND 361,074 389,032
Dimensional Fund Advisors LP [2025-06-30] SOLE 337,361 356,485
Citadel Advisors LLC [2025-06-30] DFND 325,946 325,946
Morgan Stanley [2025-06-30] DFND 244,188 264,722
AWM Investment Company Inc [2025-06-30] SOLE 255,421 255,421
Schonfeld Strategic Advisors LLC [2025-06-30] SOLE 243,643 243,643
Northern Trust Corp [2025-06-30] DFND 229,646 229,646
Bullseye Asset Management LLC [2025-06-30] SOLE 206,527 206,527
Balyasny Asset Management LP [2025-06-30] SOLE 156,338 156,338
Marshall Wace LLP [2025-06-30] OTR 0 111,971
Two Sigma Investments LP [2025-06-30] SOLE 102,745 102,745
UBS Group AG [2025-06-30] DFND 101,311 102,651
Tang Capital Management LLC [2025-06-30] OTR 0 100,000
Bridgeway Capital Management LLC [2025-06-30] SOLE 99,029 99,029
Bank of New York Mellon Corp [2025-06-30] DFND 83,097 89,777
Raymond James Financial Inc [2025-06-30] DFND 13,021 84,555
Nuveen, LLC [2025-06-30] DFND 80,973 80,973
Renaissance Technologies LLC [2025-06-30] SOLE 77,707 77,707
Avenir Corp [2025-06-30] SOLE 77,260 77,260
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