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Rudius Management LP — 13F Holdings & Portfolio

CIK 1835407 · latest 13F-HR filed 2026-08-14

Backtest portfolio

Rudius Management LP manages $386.4M in 13F-reported U.S. long-equity assets across 7 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are VLTO (59.04%), ALC (22.71%), HONA (7.75%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 4 new positions and exited 3; 1 existing position rose in reported value and 1 fell.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

Loading holdings…
AUM
$386.4M

Long-equity book

Holdings
7

Distinct positions

Period
2026-06-30

Filed 2026-08-14

Q/Q Activity
+4 / −3 / ↑1 / ↓1

vs 2026-03-31

Portfolio charts

Latest quarter's book, what changed, and how the portfolio has evolved across filings.

Portfolio map

Q2 26
VLTO59.0% · +2%ALC22.7% · -27%HONA7.7% · newHON6.6% · newFIG3.8% · newAVEX0.1% · newCERT0.0% · 0%

Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.

Sector mix

% of 13F value

Sectors from each company's SIC code; funds and ETFs grouped separately.

Biggest buys and sells

Q1 26 → Q2 26

Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.

13F assets and positions

4 quarters

Total reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.

Top positions over time

reported value

The eight largest current positions, valued at each quarter end.

Concentration

top 10 = 100%

Cumulative share of the portfolio held in the largest N positions.

Firm Profile & Key People

As of the firm’s regulatory filing dated Mar 23, 2026.

Assets Under Management
$955.8M
Discretionary
$955.8M
Employees
5
Accounts
6
Address
401 GREENWICH STREET
3RD FLOOR
NEW YORK, NY 10013
Phone
(917) 970-3065
Name Title / Status Ownership Type
ALPTUNA, UMIT, NMN ControlCCO/COO/LIMITED PARTNER
since Jul 2019
Less than 5%Individual
OZBAYDAR, MURAT, NMN ControlCIO/LIMITED PARTNER
since Mar 2018
75% or moreIndividual
RUDIUS MANAGEMENT GP, LLC ControlGENERAL PARTNER
since Mar 2018
5–10%Domestic Entity
OZBAYDAR, MURAT, NMN
Indirect owner via RUDIUS MANAGEMENT GP, LLC
OWNER/MANAGING MEMBER
since Aug 2019
75% or moreIndividual
Ownership & leadership changes · 1 filing with changes since Aug 28, 2019

From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.

Jun 30, 2025 filing
  • ChangedALPTUNA, UMIT, NMN · ownership 5–10% → Less than 5%
  • ChangedRUDIUS MANAGEMENT GP, LLC · ownership Less than 5% → 5–10%
Aug 28, 2019 filing (earliest on record)
  • ListedALPTUNA, UMIT, NMN · CCO/COO/LIMITED PARTNER · 5–10% · control person
  • ListedOZBAYDAR, MURAT, NMN · CIO/LIMITED PARTNER · 75% or more · control person
  • ListedOZBAYDAR, MURAT, NMN · OWNER/MANAGING MEMBER · 75% or more · indirect via RUDIUS MANAGEMENT GP, LLC
  • ListedRUDIUS MANAGEMENT GP, LLC · GENERAL PARTNER · Less than 5% · control person

Quarter-over-quarter changes

Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.

Top Adds (vs prior quarter)

Show all 1 →

Top Trims

Show all 1 →

New Positions

Show all 4 →

Exited Positions

Show all 3 →

Rudius Management LP Holdings (2026-06-30)

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

# Issuer Symbol CUSIP Value Weight Shares Type
1 VERALTO CORP VLTO 92338C103 $228.2M 59.04% 2,572,812 SH
2 ALCON AG ALC H01301128 $87.8M 22.71% 1,307,914 SH
3 HONEYWELL AEROSPACE INC HONA 43849R105 $29.9M 7.75% 135,444 SH
4 HONEYWELL INTL INC HON 438516205 $25.5M 6.61% 114,077 SH
5 FIGMA INC FIG 316841105 $14.6M 3.79% 808,954 SH
6 AEVEX CORP AVEX 00835T107 $208.8K 0.05% 9,996 SH
7 CERTARA INC CERT 15687V109 $187.3K 0.05% 28,600 SH
Filing History
Period Filed AUM Holdings Accession
2026-06-30 2026-08-14 $386.4M 7 0001835407-26-000005
2026-03-31 2026-05-14 $357.6M 6 0001835407-26-000003
2025-12-31 2026-02-17 $461.0M 3 0001835407-26-000002
2025-09-30 2025-11-13 $476.4M 4 0001835407-25-000007
Filer Information
Address
401 GREENWICH STREET
3RD FLOOR
NEW YORK, NY 10013
Phone
(917) 970-3065
Filing Manager
Rudius Management LP
NEW YORK, NY
Signatory
Umit Alptuna
CCO/COO/Limited Partner