Which funds hold ROC?

As of 2026-Q2, 5 institutional funds reported holding ROC (ROCKWOOD HOLDINGS INC) in SEC 13F filings, with a combined reported value of $861.52K.

How many shares of ROC do institutions own?

13F filers reported 163.48K shares of ROC, worth $861.52K in aggregate at the end of 2026-Q2.

Is institutional ownership of ROC rising or falling?

Share counts moved +921.9% versus the prior quarter — accumulation.

Where does this data come from?

All figures are computed from SEC Form 13F quarterly filings, which institutional investment managers must file within 45 days of quarter end for long positions of $100,000 or more.

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ROC — ROCKWOOD HOLDINGS INC

Reported value held$19.59M

Funds holding (latest)11

SectorTechnology

Funds holding (Q2 2026)5

Institutional value$861.52K · 163.48K sh

New / Add / Cut / Exit3 / 2 / 0 / 1

Top-5 / Top-10 concentration100.0% / 100.0%

Institutional holdings change Accumulating +921.9% (+147.48K sh)

Institutional value change Up +670.5%

As of Q2 2026, 5 SEC-registered investment managers reported holding ROC (ROCKWOOD HOLDINGS INC) in their latest 13F filings, with a combined reported value of $861.52K across 163.48K shares. That is +921.9% by share count (+147.48K shares) versus the previous quarter, while reported value moved +670.5%. Ownership is concentrated: the five largest holders account for 100.0% of reported value and the top ten for 100.0%.

Compared with the prior quarter, 3 opened new positions, 2 added to existing stakes, 1 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.

ROC is classified in the Technology sector.

All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.

Fund	Quarter	Shares	Value	Portfolio Weight	Change
D. E. Shaw & Co history	Q1 2023	890.96K	$9.29M	0.01%	Hold
Balyasny Asset Management history	Q1 2023	500.00K	$5.22M	0.01%	Hold
Citigroup Inc history	Q1 2023	193.60K	$2.02M	0.00%	Reduce
Marshall Wace history	Q4 2022	166.75K	$1.71M	0.00%	Hold
Goldman Sachs Group history	Q1 2023	46.43K	$485.16K	0.00%	Hold
Citadel Advisors history	Q2 2026	70.39K	$370.98K	0.00%	Add

Millennium Management history	Q2 2026	42.57K	$224.34K	0.00%	New
Geode Capital Management history	Q2 2026	33.73K	$177.76K	0.00%	New
BlackRock Inc history	Q2 2026	14.82K	$78.10K	0.00%	New
UBS Group AG history	Q2 2026	1.96K	$10.35K	0.00%	Add
Morgan Stanley history	Q1 2026	400	$2.80K	0.00%	New

New Positions (Q2 2026)

Millennium Management 42.57K sh · $224.34K
Geode Capital Management 33.73K sh · $177.76K
BlackRock Inc 14.82K sh · $78.10K

Fully Exited (vs previous quarter)

Morgan Stanley sold 400 sh · $2.80K

Fund Position History — shares by quarter (top 11 funds)

Fund	Q4 2021	Q1 2022	Q2 2022	Q3 2022	Q4 2022	Q1 2023	Q1 2026	Q2 2026
Citadel Advisors	—	—	—	—	—	—	14.88K	70.39K
Millennium Management	—	54.04K	54.04K	54.04K	54.00K	54.00K	—	42.57K
Geode Capital Management	—	—	—	—	—	—	—	33.73K
BlackRock Inc	—	—	—	—	—	—	—	14.82K
UBS Group AG	100	35	425	813	566	—	720	1.96K
Morgan Stanley	—	2.02K	2.02K	14.97K	31.28K	3.17K	400	—
Goldman Sachs Group	—	26.61K	26.61K	46.43K	46.43K	46.43K	—	—
Balyasny Asset Management	—	500.00K	500.00K	500.00K	500.00K	500.00K	—	—
Citigroup Inc	—	300.00K	300.00K	300.00K	217.53K	193.60K	—	—
D. E. Shaw & Co	—	557.62K	557.62K	890.96K	890.96K	890.96K	—	—
Marshall Wace	21.77K	166.75K	166.75K	166.75K	166.75K	—	—	—

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