IRONWOOD INVESTMENT MANAGEMENT LLC

CIK

1127761

City

BOSTON

State / Country

Stock

RBBN — Ribbon Communications Inc.

Top Portfolio Positions

159 positions · $184,863,134 total · as of Mar 31, 2026

Ticker	Company	Shares	Value (USD)	% of Portfolio
MYRG	Myr Group Inc. Industrials	17,693	$4,995,087	2.70%
VICR	Vicor Corp Technology	30,889	$4,973,129	2.69%
GPI	Group 1 Automotive Inc Consumer Cyclical	14,627	$4,836,125	2.62%
DY	Dycom Industries Inc Industrials	14,192	$4,808,533	2.60%
BBIO	BridgeBio Pharma, Inc. Healthcare	60,960	$4,526,889	2.45%
C	Citigroup Inc Financial Services	35,562	$4,033,086	2.18%
CYTK	Cytokinetics Inc Healthcare	56,738	$3,739,601	2.02%
SGI	Somnigroup International Inc. Consumer Cyclical	46,975	$3,472,392	1.88%
PEGA	Pegasystems Inc Technology	78,365	$3,335,214	1.80%
TTMI	Ttm Technologies Inc Technology	32,617	$3,177,548	1.72%

25 quarters · across all stocks

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25 of 25 shown

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$38,299	18,066	-1.5%	Shares	Sole	2026-05-15
2025-12-31	$52,848	18,350	-0.3%	Shares	Sole	2026-02-12
2025-09-30	$69,927	18,402	-1.3%	Shares	Sole	2025-11-13
2025-06-30	$74,766	18,645	-3.0%	Shares	Sole	2025-08-13
2025-03-31	$75,334	19,218	+0.3%	Shares	Sole	2025-05-15
2024-12-31	$79,722	19,164	+1.3%	Shares	Sole	2025-02-10
2024-09-30	$61,506	18,925	+0.9%	Shares	Sole	2024-11-14
2024-06-30	$61,736	18,765	+0.4%	Shares	Sole	2024-08-16
2024-03-31	$59,814	18,692	-0.9%	Shares	Sole	2024-05-15
2023-12-31	$54,711	18,866	-2.0%	Shares	Sole	2024-02-14
2023-09-30	$51,611	19,258	-3.2%	Shares	Sole	2023-11-16
2023-06-30	$55,507	19,895	-0.2%	Shares	Sole	2023-08-11
2023-03-31	$68,205	19,943	+10.5%	Shares	Sole	2023-05-15
2022-12-31	$50,370	18,054	-12.8%	Shares	Sole	2023-01-31
2022-09-30	$45,954	20,700	+0.3%	Shares	Sole	2022-11-14
2022-06-30	$62,766	20,647	+0.0%	Shares	Sole	2022-08-12
2022-03-31	$63,777	20,640	+1.0%	Shares	Sole	2022-05-10
2021-12-31	$123,607	20,431	+2.6%	Shares	Sole	2022-02-10
2021-09-30	$119,025	19,904	+0.1%	Shares	Sole	2021-11-12
2021-06-30	$151,294	19,881	-2.2%	Shares	Sole	2021-08-16
2021-03-31	$166,958	20,336	+0.4%	Shares	Sole	2021-05-14
2020-12-31	$132,899	20,259	-3.3%	Shares	Sole	2021-02-12
2020-09-30	$81,057	20,945	-0.2%	Shares	Sole	2020-11-13
2020-06-30	$82,451	20,980	-0.5%	Shares	Sole	2020-08-17
2020-03-31	$63,917	21,095	—	Shares	Sole	2020-05-14
No quarters match your search.