OSI Systems, Inc.
DE ˙ DB ˙ US6710441055
180,25 € ↓ -0,35 (-0,19%)
2026-06-04
DEL PRIS
SecurityDE:OS2 / OSI Systems, Inc.
InstitutionChatham Capital Group, Inc.
Latest Disclosed Ownership15,692 shares
Latest Disclosed Value $ 4,166,383
Chatham Capital Group, Inc. reports 10.74% decrease in ownership of OS2 / OSI Systems, Inc.

On April 20, 2026 - Chatham Capital Group, Inc. filed a 13F-HR form disclosing ownership of 15,692 shares of OSI Systems, Inc. (DE:OS2) valued at $3,577,776 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 14, 2026 disclosing 17,580 shares of OSI Systems, Inc.. This represents a change in shares of -10.74% during the quarter. The current value of the position is $2,828,483 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)
2026-04-20 2026-03-31 13F OSI SYSTEMS COM 671044105 15,692 -1,888 -10.74 4,166 -7.07 0.6044
2026-01-14 2025-12-31 13F OSI SYSTEMS COM 671044105 17,580 445 2.60 4,484 4.99 0.6380
2025-10-15 2025-09-30 13F OSI SYSTEMS COM 671044105 17,135 435 2.60 4,271 13.72 0.6143
2025-07-17 2025-06-30 13F OSI SYSTEMS COM 671044105 16,700 -75 -0.45 3,755 15.18 0.5728
2025-04-10 2025-03-31 13F OSI SYSTEMS COM 671044105 16,775 673 4.18 3,260 20.96 0.5439
2025-02-07 2024-12-31 13F OSI SYSTEMS COM 671044105 16,102 -310 -1.89 2,696 8.19 0.4434
2024-10-16 2024-09-30 13F OSI SYSTEMS COM 671044105 16,412 30 0.18 2,492 10.61 0.4074
2024-07-15 2024-06-30 13F OSI SYSTEMS COM 671044105 16,382 225 1.39 2,253 -2.38 0.3932
2024-04-18 2024-03-31 13F OSI SYSTEMS COM 671044105 16,157 1,975 13.93 2,308 26.07 0.4235
2024-01-19 2023-12-31 13F OSI SYSTEMS COM 671044105 14,182 -470 -3.21 1,830 5.84 0.3706
2023-10-26 2023-09-30 13F OSI SYSTEMS COM 671044105 14,652 14,652 1,730 0.3860
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.