Aperio Group, LLC reports 20.68% increase in ownership of MPWR / Monolithic Power Systems, Inc.

모놀리식 파워 시스템즈, Inc.

US ˙ NasdaqGS ˙ US6098391054

Security	MPWR / Monolithic Power Systems, Inc.
Institution	Aperio Group, LLC
Latest Disclosed Ownership	32,775 shares
Latest Disclosed Value	$ 12,003,000

On February 5, 2021 - Aperio Group, LLC filed a 13F-HR form disclosing ownership of 32,775 shares of Monolithic Power Systems, Inc. (US:MPWR) valued at $12,003,188 USD as of December 31, 2020. The entity filed a previous 13F-HR on November 6, 2020 disclosing 27,158 shares of Monolithic Power Systems, Inc.. This represents a change in shares of 20.68% during the quarter. The current value of the position is $48,541,414 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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2021-02-05	2020-12-31	13F	MONOLITHIC PWR SYS	COM	609839105	32,775	5,617	20.68	12,003	58.06	0.0355
2020-11-06	2020-09-30	13F	MONOLITHIC PWR SYS	COM	609839105	27,158	315	1.17	7,594	19.36	0.0257
2020-08-13	2020-06-30	13F	MONOLITHIC PWR SYS	COM	609839105	26,843	2,036	8.21	6,362	53.15	0.0235
2020-05-05	2020-03-31	13F	MONOLITHIC PWR SYS	COM	609839105	24,807	844	3.52	4,154	-2.63	0.0184
2020-02-13	2019-12-31	13F	MONOLITHIC PWR SYS	COM	609839105	23,963	383	1.62	4,266	16.24	0.0153
2019-11-06	2019-09-30	13F	MONOLITHIC PWR SYS	COM	609839105	23,580	-845	-3.46	3,670	10.68	0.0145
2019-07-30	2019-06-30	13F	MONOLITHIC PWR SYS	COM	609839105	24,425	1,686	7.41	3,316	7.63	0.0135
2019-05-13	2019-03-31	13F	MONOLITHIC PWR SYS	COM	609839105	22,739	-1,744	-7.12	3,081	8.26	0.0133
2019-05-06	2018-12-31	13F/A-1	MONOLITHIC PWR SYS	COM	609839105	24,483	-853	-3.37	2,846	-10.50	0.0144
2019-02-14	2018-12-31	13F	MONOLITHIC PWR SYS	COM	609839105	25,364	28		2,949
2019-05-06	2018-09-30	13F/A-1	MONOLITHIC PWR SYS	COM	609839105	25,336	1,458	6.11	3,180	-0.38	0.0140
2018-10-17	2018-09-30	13F	MONOLITHIC PWR SYS IN	COMMON	609839105	25,336	1,458		3,180
2019-05-06	2018-06-30	13F/A-1	MONOLITHIC PWR SYS	COM	609839105	23,878	2,415	11.25	3,192	28.45	0.0153
2018-07-30	2018-06-30	13F	MONOLITHIC PWR SYS IN	COMMON	609839105	23,878	2,415		3,192
2019-05-01	2018-03-31	13F/A-1	MONOLITHIC PWR SYS	COM	609839105	21,463	261	1.23	2,485	4.32	0.0124
2018-05-08	2018-03-31	13F	MONOLITHIC PWR SYS IN	COMMON	609839105	21,463	261		2,485
2019-05-01	2017-12-31	13F/A-1	MONOLITHIC PWR SYS	COM	609839105	21,202	3,412	19.18	2,382	25.63	0.0123
2018-02-02	2017-12-31	13F	MONOLITHIC PWR SYS IN	COMMON	609839105	21,202	3,412		2,382
2019-05-01	2017-09-30	13F/A-1	MONOLITHIC PWR SYS	COM	609839105	17,790	1,386	8.45	1,896	19.92	0.0107
2017-10-25	2017-09-30	13F	MONOLITHIC PWR SYS IN	COMMON	609839105	17,790	1,386		1,896
2019-04-22	2017-06-30	13F/A-1	MONOLITHIC PWR SYS	COM	609839105	16,404	1,137	7.45	1,581	12.45	0.0097
2017-07-18	2017-06-30	13F	MONOLITHIC PWR SYS IN	COMMON	609839105	16,404	1,137		1,581
2019-04-22	2017-03-31	13F/A-1	MONOLITHIC PWR SYS	COM	609839105	15,267	1,786	13.25	1,406	27.36	0.0096
2017-05-05	2017-03-31	13F	MONOLITHIC PWR SYS IN	COMMON	609839105	15,267	1,786		1,406
2019-04-22	2016-12-31	13F/A-1	MONOLITHIC PWR SYS	COM	609839105	13,481	283	2.14	1,104	3.95	0.0084
2017-02-14	2016-12-31	13F	MONOLITHIC PWR SYS IN	COMMON	609839105	13,481	283		1,104
2019-04-12	2016-09-30	13F/A-1	MONOLITHIC PWR SYS	COM	609839105	13,198	-286	-2.12	1,062	15.31	0.0077
2016-11-01	2016-09-30	13F	MONOLITHIC PWR SYS IN	COMMON	609839105	13,198	-286		1,062
2019-04-12	2016-06-30	13F/A-1	MONOLITHIC PWR SYS	COM	609839105	13,484	1,019	8.17	921	16.14	0.0072
2016-08-12	2016-06-30	13F	MONOLITHIC PWR SYS IN	COMMON	609839105	13,484	1,019		921
2019-04-12	2016-03-31	13F/A-1	MONOLITHIC PWR SYS	COM	609839105	12,465	1,786	16.72	793	16.62	0.0068
2016-04-28	2016-03-31	13F	MONOLITHIC PWR SYS IN	COMMON	609839105	12,465	1,786		793
2016-01-21	2015-12-31	13F	MONOLITHIC PWR SYS IN	COMMON	609839105	10,679	1,670	18.54	680	47.51	0.0062
2015-10-19	2015-09-30	13F	MONOLITHIC PWR SYS IN	COMMON	609839105	9,009	1,665	22.67	461	23.92	0.0047
2015-07-29	2015-06-30	13F	MONOLITHIC PWR SYS IN	COMMON	609839105	7,344	1,032	16.35	372	12.05	0.0038
2015-04-29	2015-03-31	13F	MONOLITHIC PWR SYS IN	COMMON	609839105	6,312	6,312		332		0.0037

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.