Arthur J. Gallagher & Co.
US ˙ NYSE ˙ US3635761097

SecurityAJG / Arthur J. Gallagher & Co.
InstitutionQube Research & Technologies Ltd
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Qube Research & Technologies Ltd ownership in AJG / Arthur J. Gallagher & Co.

On November 14, 2025 - Qube Research & Technologies Ltd filed a 13F-HR form disclosing ownership of 0 shares of Arthur J. Gallagher & Co. (US:AJG) valued at $0 USD as of September 30, 2025. The entity filed a previous 13F-HR on August 14, 2025 disclosing 10,711 shares of Arthur J. Gallagher & Co.. This represents a change in shares of -100.00% during the quarter. The current value of the position is $0 USD.

Qube Research & Technologies Ltd has a history of taking positions in derivatives of the underlying security (AJG) in the form of stock options.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

AJG / Arthur J. Gallagher & Co. Historical Put/Call Ratio
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)
2025-11-14 2025-09-30 13F GALLAGHER ARTHUR J COM 363576109 0 -10,711 -100.00 0 -100.00
2025-08-14 2025-06-30 13F GALLAGHER ARTHUR J COM 363576109 10,711 10,711 3,429 0.0035
2025-02-14 2024-12-31 13F GALLAGHER ARTHUR J COM 363576109 0 -119,590 -100.00 0 -100.00
2024-11-14 2024-09-30 13F GALLAGHER ARTHUR J COM 363576109 119,590 66,692 126.08 33,649 145.33 0.0496
2024-08-14 2024-06-30 13F GALLAGHER ARTHUR J COM 363576109 52,898 -192,048 -78.40 13,717 -77.61 0.0217
2024-05-14 2024-03-31 13F GALLAGHER ARTHUR J COM 363576109 244,946 81,886 50.22 61,246 67.03 0.0971
2024-02-13 2023-12-31 13F GALLAGHER ARTHUR J COM 363576109 163,060 161,403 9,740.68 36,669 9,626.26 0.0714
2023-11-13 2023-09-30 13F GALLAGHER ARTHUR J COM 363576109 1,657 -107,657 -98.48 378 -98.43 0.0010
2023-08-14 2023-06-30 13F GALLAGHER ARTHUR J COM 363576109 109,314 94,227 624.56 24,002 731.67 0.0873
2023-05-15 2023-03-31 13F GALLAGHER ARTHUR J COM 363576109 15,087 -156,074 -91.19 2,886 -91.06 0.0124
2023-02-14 2022-12-31 13F GALLAGHER ARTHUR J COM 363576109 171,161 166,755 3,784.73 32,271 4,179.84 0.1727
2022-11-14 2022-09-30 13F GALLAGHER ARTHUR J COM 363576109 4,406 4,406 754 0.0045
2022-05-09 2022-03-31 13F GALLAGHER ARTHUR J COM 363576109 0 -129,577 -100.00 0 -100.00
2022-02-10 2021-12-31 13F/A-1 GALLAGHER ARTHUR J COM 363576109 129,577 129,577 21,985 0.1697
2022-02-01 2021-12-31 13F GALLAGHER ARTHUR J COM 363576109 129,577 129,577 21,985 0.1699
2021-11-12 2021-09-30 13F GALLAGHER ARTHUR J COM 363576109 0 -173,554 -100.00 0 -100.00
2021-08-13 2021-06-30 13F GALLAGHER ARTHUR J COM 363576109 173,554 127,229 274.64 24,311 320.61 0.2770
2021-05-14 2021-03-31 13F GALLAGHER ARTHUR J COM 363576109 46,325 13,507 41.16 5,780 42.36 0.0917
2021-02-16 2020-12-31 13F GALLAGHER ARTHUR J COM 363576109 32,818 32,818 4,060 0.0577
2019-08-02 2019-06-30 13F GALLAGHER ARTHUR J COM 363576109 0 -2,824 -100.00 0 -100.00
2019-05-15 2019-03-31 13F GALLAGHER ARTHUR J COM 363576109 2,824 2,824 221 0.0292
2019-02-14 2018-12-31 13F GALLAGHER ARTHUR J COM 363576109 0 -2,409 -100.00 0 -100.00
2018-11-14 2018-09-30 13F GALLAGHER ARTHUR J COM 363576109 2,409 2,409 179 0.0238
2018-08-15 2018-06-30 13F/A-1 GALLAGHER ARTHUR J COM 363576109 0 -2,606 -100.00 0 -100.00
2018-05-14 2018-03-31 13F GALLAGHER ARTHUR J COM 363576109 2,606 2,606 179 0.0688
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2025-02-14 2024-12-31 13F GALLAGHER ARTHUR J COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-14 2024-09-30 13F GALLAGHER ARTHUR J COM Put 600 169 n/a n/a n/a
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.