OptimizeRx Corporation
US ˙ NasdaqCM ˙ US68401U2042

SecurityOPRX / OptimizeRx Corporation
InstitutionQUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series
Latest Disclosed Ownership31,635 shares
Latest Disclosed Value $ 427,072
QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series reports 17.42% increase in ownership of OPRX / OptimizeRx Corporation

On August 26, 2025 - QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series filed a NPORT-P form disclosing ownership of 31,635 shares of OptimizeRx Corporation (US:OPRX) valued at $427,072 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 28, 2025 disclosing 26,941 shares of OptimizeRx Corporation. This represents a change in shares of 17.42% during the quarter. The current value of the position is $161,655 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2025-08-26 2025-06-30 NP OptimizeRx EC US68401U2042 31,635 4,694 17.42 427 83.26 0.0096
2025-05-28 2025-03-31 NP OptimizeRx EC US68401U2042 26,941 -8,086 -23.09 233 37.06 0.0056
2025-02-25 2024-12-31 NP OptimizeRx EC US68401U2042 35,027 0 0.00 170 -37.04 0.0037
2024-11-26 2024-09-30 NP OptimizeRx EC US68401U2042 35,027 6,143 21.27 270 -6.25 0.0051
2024-08-26 2024-06-30 NP OptimizeRx EC US68401U2042 28,884 0 0.00 289 -17.71 0.0059
2024-05-28 2024-03-31 NP OptimizeRx EC US68401U2042 28,884 -3,456 -10.69 351 -24.24 0.0073
2024-02-26 2023-12-31 NP OptimizeRx EC US68401U2042 32,340 4,268 15.20 463 111.93 0.0099
2023-11-28 2023-09-30 NP OptimizeRx EC US68401U2042 28,072 0 0.00 218 -45.64 0.0057
2023-08-25 2023-06-30 NP OptimizeRx EC US68401U2042 28,072 -85 -0.30 401 -2.43 0.0095
2023-05-26 2023-03-31 NP OptimizeRx EC US68401U2042 28,157 0 0.00 412 -13.11 0.0110
2023-02-24 2022-12-31 NP OptimizeRx EC US68401U2042 28,157 0 0.00 473 13.43 0.0130
2022-11-25 2022-09-30 NP OptimizeRx EC US68401U2042 28,157 1,260 4.68 417 -43.34 0.0120
2022-08-25 2022-06-30 NP OptimizeRx EC US68401U2042 26,897 0 0.00 737 -27.42 0.0203
2022-05-26 2022-03-31 NP OptimizeRx EC US68401U2042 26,897 0 0.00 1,014 -39.28 0.0236
2022-02-25 2021-12-31 NP OptimizeRx EC US68401U2042 26,897 0 0.00 1,671 -27.42 0.0362
2021-11-24 2021-09-30 NP OptimizeRx EC US68401U2042 26,897 2,361 9.62 2,301 51.58 0.0507
2021-08-26 2021-06-30 NP OptimizeRx EC US68401U2042 24,536 0 0.00 1,519 26.92 0.0326
2021-05-27 2021-03-31 NP OptimizeRx EC US68401U2042 24,536 1,812 7.97 1,196 68.93 0.0271
2021-02-25 2020-12-31 NP OptimizeRx EC US68401U2042 22,724 0 0.00 708 49.68 0.0181
2020-11-25 2020-09-30 NP OptimizeRx EC US68401U2042 22,724 0 0.00 474 59.80 0.0152
2020-08-27 2020-06-30 NP OptimizeRx EC US68401U2042 22,724 1,418 6.66 296 53.37 0.0097
2020-06-01 2020-03-31 NP OptimizeRx EC US68401U2042 21,306 0 0.00 193 -11.47 0.0079
2020-02-27 2019-12-31 NP OptimizeRx EC 68401U204 21,306 3,207 17.72 219 -16.79 0.0066
2019-11-27 2019-09-30 NP OptimizeRx EC US68401U2042 18,099 18,099 262 0.0087
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.