Alphabet Inc.
CL ˙ SNSE ˙ US02079K3059
SecurityCL:GOOGL / Alphabet Inc.
InstitutionAtreides Management, LP
Latest Disclosed Ownership555,023 shares
Latest Disclosed Value $ 159,602,414
Atreides Management, LP ownership in GOOGL / Alphabet Inc.

On May 18, 2026 - Atreides Management, LP filed a 13F-HR form disclosing ownership of 555,023 shares of Alphabet Inc. (CL:GOOGL) valued at $159,602,414 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 514,339 shares of Alphabet Inc.. This represents a change in shares of 7.91% during the quarter.

Atreides Management, LP has a history of taking positions in derivatives of the underlying security (GOOGL) 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.

CL:GOOGL / 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)
2026-05-18 2026-03-31 13F ALPHABET CAP STK CL A 02079K305 555,023 40,684 7.91 159,602 -0.86 3.1906
2026-02-17 2025-12-31 13F ALPHABET CAP STK CL A 02079K305 514,339 -35,921 -6.53 160,988 20.35 1.9672
2025-11-14 2025-09-30 13F ALPHABET CAP STK CL A 02079K305 550,260 -400,599 -42.13 133,768 -20.17 2.6052
2025-08-14 2025-06-30 13F ALPHABET CAP STK CL A 02079K305 950,859 761,782 402.90 167,570 473.12 4.6500
2025-05-15 2025-03-31 13F ALPHABET CAP STK CL A 02079K305 189,077 -254,544 -57.38 29,239 -65.18 0.8876
2025-02-14 2024-12-31 13F ALPHABET CAP STK CL A 02079K305 443,621 224,104 102.09 83,977 130.67 1.8388
2024-11-14 2024-09-30 13F ALPHABET CAP STK CL A 02079K305 219,517 -317,918 -59.15 36,407 -62.81 0.9269
2024-08-14 2024-06-30 13F ALPHABET CAP STK CL A 02079K305 537,435 -357,775 -39.97 97,894 -27.55 3.1969
2024-05-15 2024-03-31 13F ALPHABET CAP STK CL A 02079K305 895,210 895,210 135,114 3.0670
2024-02-14 2023-12-31 13F ALPHABET CAP STK CL A 02079K305 0 -1,240,957 -100.00 0 -100.00
2023-11-14 2023-09-30 13F ALPHABET CAP STK CL A 02079K305 1,240,957 1,240,957 162,392 5.3080
2022-11-14 2022-09-30 13F ALPHABET CAP STK CL A 02079K305 0 -14,827 -100.00 0 -100.00
2022-08-15 2022-06-30 13F ALPHABET CAP STK CL A 02079K305 14,827 -82,111 -84.70 32,312 -88.02 1.2008
2022-05-16 2022-03-31 13F ALPHABET CAP STK CL A 02079K305 96,938 49,823 105.75 269,619 97.53 8.3064
2022-02-14 2021-12-31 13F ALPHABET CAP STK CL A 02079K305 47,115 22,862 94.26 136,494 110.51 4.2651
2021-11-15 2021-09-30 13F ALPHABET CAP STK CL A 02079K305 24,253 -6,456 -21.02 64,841 -13.53 1.5312
2021-08-16 2021-06-30 13F ALPHABET CAP STK CL A 02079K305 30,709 30,709 74,985 1.3394
2020-11-16 2020-09-30 13F ALPHABET CAP STK CL A 02079K305 0 -29,611 -100.00 0 -100.00
2020-08-14 2020-06-30 13F ALPHABET CAP STK CL A 02079K305 29,611 2,570 9.50 41,990 33.64 5.9289
2020-05-15 2020-03-31 13F ALPHABET CAP STK CL A 02079K305 27,041 7,000 34.93 31,420 17.05 6.9480
2020-02-14 2019-12-31 13F ALPHABET CAP STK CL A 02079K305 20,041 20,041 26,843 6.1581
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
(%)
2023-08-14 2023-06-30 13F ALPHABET CAP STK CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-05-15 2023-03-31 13F ALPHABET CAP STK CL A Call 500,000 51,865 n/a n/a n/a
2022-02-14 2021-12-31 13F ALPHABET CAP STK CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-11-15 2021-09-30 13F ALPHABET CAP STK CL A Call 75,000 -50.00 200,514 -45.25 n/a n/a n/a
2021-08-16 2021-06-30 13F ALPHABET CAP STK CL A Call 150,000 366,269 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.