Alphabet Inc.
BG ˙ BUL ˙ US02079K3059
SecurityBG:ABEA / Alphabet Inc.
InstitutionAdvisor OS, LLC
Latest Disclosed Ownership35,900 shares
Latest Disclosed Value $ 10,323,501
Advisor OS, LLC ownership in ABEA / Alphabet Inc.

On May 7, 2026 - Advisor OS, LLC filed a 13F-HR form disclosing ownership of 35,900 shares of Alphabet Inc. (BG:ABEA) valued at $10,323,501 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 36,090 shares of Alphabet Inc.. This represents a change in shares of -0.53% during the quarter.

Advisor OS, LLC has a history of taking positions in derivatives of the underlying security (ABEA) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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.

BG:ABEA / Alphabet Inc. 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)
2026-05-07 2026-03-31 13F ALPHABET CAP STK CL A 02079K305 35,900 -190 -0.53 10,324 -8.61 0.2902
2026-02-04 2025-12-31 13F ALPHABET CAP STK CL A 02079K305 36,090 2,919 8.80 11,296 40.10 0.3336
2025-11-12 2025-09-30 13F ALPHABET CAP STK CL A 02079K305 33,171 639 1.96 8,064 40.64 0.6958
2025-08-14 2025-06-30 13F ALPHABET CAP STK CL A 02079K305 32,532 -1,283 -3.79 5,733 9.64 0.5642
2025-05-06 2025-03-31 13F ALPHABET CAP STK CL A 02079K305 33,815 -1,363 -3.87 5,229 -21.47 0.5950
2025-02-05 2024-12-31 13F ALPHABET CAP STK CL A 02079K305 35,178 1,660 4.95 6,659 19.79 0.7712
2024-11-04 2024-09-30 13F ALPHABET CAP STK CL A 02079K305 33,518 237 0.71 5,559 -8.30 0.5534
2024-08-05 2024-06-30 13F ALPHABET CAP STK CL A 02079K305 33,281 1,065 3.31 6,062 24.68 0.6639
2024-05-09 2024-03-31 13F ALPHABET CAP STK CL A 02079K305 32,216 3,444 11.97 4,862 20.98 0.5587
2024-02-08 2023-12-31 13F ALPHABET CAP STK CL A 02079K305 28,772 685 2.44 4,019 9.36 0.5231
2023-11-03 2023-09-30 13F ALPHABET CAP STK CL A 02079K305 28,087 1,727 6.55 3,675 16.48 0.5509
2023-08-08 2023-06-30 13F ALPHABET CAP STK CL A 02079K305 26,360 8,537 47.90 3,155 70.73 0.5163
2023-04-25 2023-03-31 13F ALPHABET CAP STK CL A 02079K305 17,823 147 0.83 1,849 18.54 0.4438
2023-02-01 2022-12-31 13F ALPHABET CAP STK CL A 02079K305 17,676 1,603 9.97 1,560 1.43 0.4142
2022-11-04 2022-09-30 13F ALPHABET CAP STK CL A 02079K305 16,073 15,293 1,960.64 1,537 -9.59 0.4633
2022-08-02 2022-06-30 13F ALPHABET CAP STK CL A 02079K305 780 -20 -2.50 1,700 -23.60 0.4960
2022-05-11 2022-03-31 13F ALPHABET CAP STK CL A 02079K305 800 -540 -40.30 2,225 -42.68 0.6443
2022-02-04 2021-12-31 13F ALPHABET CAP STK CL A 02079K305 1,340 50 3.88 3,882 12.55 0.7920
2021-11-15 2021-09-30 13F ALPHABET CAP STK CL A 02079K305 1,290 -48 -3.59 3,449 5.57 0.7498
2021-08-10 2021-06-30 13F ALPHABET CAP STK CL A 02079K305 1,338 144 12.06 3,267 32.64 0.6780
2021-05-13 2021-03-31 13F ALPHABET CAP STK CL A 02079K305 1,194 -801 -40.15 2,463 -29.53 0.5584
2021-02-10 2020-12-31 13F ALPHABET CAP STK CL A 02079K305 1,995 1,111 125.68 3,495 169.68 0.9379
2020-11-12 2020-09-30 13F ALPHABET CAP STK CL A 02079K305 884 574 185.16 1,296 194.55 0.5439
2020-08-28 2020-06-30 13F ALPHABET CAP STK CL A 02079K305 310 310 440 0.2624
Disclosed Call 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
(%)
2025-11-12 2025-09-30 13F ALPHABET CAP STK CL A Call 0 -100.00 0 n/a n/a n/a
2025-08-14 2025-06-30 13F ALPHABET CAP STK CL A Call 500 0 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.