옴니앱(주)
US ˙ NasdaqGM ˙ US68218J1034

SecurityOABI / OmniAb, Inc.
InstitutionQUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series
Latest Disclosed Ownership161,213 shares
Latest Disclosed Value $ 280,510
QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series ownership in OABI / OmniAb, Inc.

On August 26, 2025 - QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series filed a NPORT-P form disclosing ownership of 161,213 shares of OmniAb, Inc. (US:OABI) valued at $280,511 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 28, 2025 disclosing 161,213 shares of OmniAb, Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $399,808 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 OmniAb EC US68218J1034 161,213 0 0.00 281 -27.46 0.0063
2025-05-28 2025-03-31 NP OmniAb EC US68218J1034 161,213 0 0.00 387 -32.28 0.0093
2025-02-25 2024-12-31 NP OmniAb EC US68218J1034 161,213 -13,828 -7.90 571 -22.97 0.0125
2024-11-26 2024-09-30 NP OmniAb EC US68218J1034 175,041 82 0.05 740 12.80 0.0140
2024-08-26 2024-06-30 NP OmniAb EC US68218J1034 174,959 9,184 5.54 656 -26.95 0.0134
2024-05-28 2024-03-31 NP OmniAb EC US68218J1034 165,775 0 0.00 898 -12.13 0.0187
2024-02-26 2023-12-31 NP OmniAb EC US68218J1034 165,775 11,406 7.39 1,023 27.59 0.0218
2023-11-28 2023-09-30 NP OmniAb EC US68218J1034 154,369 -7,353 -4.55 801 -1.48 0.0209
2023-08-25 2023-06-30 NP OmniAb EC US68218J1034 161,722 35,527 28.15 813 75.22 0.0193
2023-05-26 2023-03-31 NP OmniAb EC US68218J1034 126,195 9,848 8.46 464 11.00 0.0124
2023-02-24 2022-12-31 NP OmniAb EC US68218J1034 116,347 116,347 419 0.0115
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.