Telephone and Data Systems, Inc.
US ˙ NYSE ˙ US8794338298

SecurityTDS / Telephone and Data Systems, Inc.
InstitutionParallel Advisors, LLC
Latest Disclosed Ownership2,823 shares
Latest Disclosed Value $ 115,743
Parallel Advisors, LLC ownership in TDS / Telephone and Data Systems, Inc.

On February 11, 2026 - Parallel Advisors, LLC filed a 13F-HR form disclosing ownership of 2,823 shares of Telephone and Data Systems, Inc. (US:TDS) valued at $115,743 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 2,823 shares of Telephone and Data Systems, Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $110,633 USD.

Parallel Advisors, LLC has a history of taking positions in derivatives of the underlying security (TDS) 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.

TDS / Telephone and Data Systems, 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)
2026-02-11 2025-12-31 13F TELEPHONE & DATA SYS INC COM Stock 879433829 2,823 0 0.00 116 4.55 0.0021
2025-11-13 2025-09-30 13F TELEPHONE & DATA SYS INC COM Stock 879433829 2,823 -3 -0.11 111 10.00 0.0020
2025-07-08 2025-06-30 13F TELEPHONE & DATA SYS INC COM Stock 879433829 2,826 -344 -10.85 101 -18.03 0.0020
2025-04-08 2025-03-31 13F TELEPHONE & DATA SYS INC COM Stock 879433829 3,170 6 0.19 123 14.02 0.0028
2025-02-10 2024-12-31 13F TELEPHONE & DATA SYS INC COM Stock 879433829 3,164 -24 -0.75 108 44.59 0.0024
2024-11-13 2024-09-30 13F TELEPHONE & DATA SYS INC COM Stock 879433829 3,188 -380 -10.65 74 1.37 0.0017
2024-08-08 2024-06-30 13F TELEPHONE & DATA SYS INC COM Stock 879433829 3,568 431 13.74 74 46.00 0.0019
2024-05-06 2024-03-31 13F TELEPHONE & DATA SYS INC COM Stock 879433829 3,137 -228 -6.78 50 -18.03 0.0014
2024-02-12 2023-12-31 13F TELEPHONE & DATA SYS INC COM Stock 879433829 3,365 87 2.65 62 1.67 0.0018
2024-05-20 2023-09-30 13F/A-1 TELEPHONE & DATA SYS INC COM Stock 879433829 3,278 163 5.23 60 140.00 0.0020
2023-11-14 2023-09-30 13F TELEPHONE & DATA SYS INC COM Stock 879433829 3,278 163 60 0.0020
2024-05-20 2023-06-30 13F/A-1 TELEPHONE & DATA SYS INC COM Stock 879433829 3,115 2,760 777.46 26 733.33 0.0008
2023-08-04 2023-06-30 13F TELEPHONE & DATA SYS INC COM Stock 879433829 3,115 2,760 26 0.0008
2024-05-20 2023-03-31 13F/A-1 TELEPHONE & DATA SYS INC COM Stock 879433829 355 -404 -53.23 4 -57.14 0.0001
2023-04-25 2023-03-31 13F TELEPHONE & DATA SYS INC COM Stock 879433829 355 -404 4 0.0001
2023-02-06 2022-12-31 13F TELEPHONE & DATA SYS INC COM Stock 879433829 759 329 76.51 8 16.67 0.0003
2022-11-10 2022-09-30 13F TELEPHONE & DATA SYS INC COM Stock 879433829 430 -534 -55.39 6 -60.00 0.0003
2022-08-01 2022-06-30 13F TELEPHONE & DATA SYS INC COM Stock 879433829 964 -551 -36.37 15 -48.28 0.0007
2022-04-28 2022-03-31 13F TELEPHONE & DATA SYS INC COM Stock 879433829 1,515 -1,046 -40.84 29 -44.23 0.0012
2022-01-20 2021-12-31 13F TELEPHONE & DATA SYS INC COM Stock 879433829 2,561 164 6.84 52 10.64 0.0019
2021-11-02 2021-09-30 13F/A-1 TELEPHONE & DATA SYS INC COM Stock 879433829 2,397 -286 -10.66 47 -22.95 0.0019
2021-08-06 2021-06-30 13F TELEPHONE & DATA SYS INC COM Stock 879433829 2,683 -63 -2.29 61 -3.17 0.0026
2021-04-23 2021-03-31 13F TELEPHONE & DATA SYS INC COM Stock 879433829 2,746 -397 -12.63 63 8.62 0.0030
2021-02-02 2020-12-31 13F TELEPHONE & DATA SYS INC COM Stock 879433829 3,143 -2,161 -40.74 58 -40.82 0.0031
2020-10-27 2020-09-30 13F TELEPHONE & DATA SYS INC COM Stock 879433829 5,304 -339 -6.01 98 -12.50 0.0061
2020-07-16 2020-06-30 13F TELEPHONE & DATA SYS INC COM Stock 879433829 5,643 3,661 184.71 112 239.39 0.0073
2020-04-27 2020-03-31 13F TELEPHONE & DATA SYS INC COM Stock 879433829 1,982 1,299 190.19 33 94.12 0.0027
2020-01-30 2019-12-31 13F TELEPHONE & DATA SYS INC COM Stock 879433829 683 331 94.03 17 88.89 0.0013
2019-11-01 2019-09-30 13F TELEPHONE & DATA SYS INC COM Stock 879433829 352 0 0.00 9 -18.18 0.0008
2019-08-05 2019-06-30 13F TELEPHONE & DATA SYS INC COM Stock 879433829 352 0 0.00 11 0.00 0.0011
2019-05-01 2019-03-31 13F TELEPHONE & DATA SYS INC COM Stock 879433829 352 0 0.00 11 0.00 0.0012
2019-02-05 2018-12-31 13F TELEPHONE & DATA SYS INC COM Stock 879433829 352 0 0.00 11 0.00 0.0015
2018-11-01 2018-09-30 13F TELEPHONE & DATA SYS INC COM Stock 879433829 352 0 0.00 11 22.22 0.0014
2018-07-30 2018-06-30 13F TELEPHONE & DATA SYS INC COM Stock 879433829 352 0 0.00 9 -10.00 0.0013
2018-05-08 2018-03-31 13F TELEPHONE & DATA SYS INC COM Stock 879433829 352 0 0.00 10 0.00 0.0016
2018-02-13 2017-12-31 13F TELEPHONE & DATA SYS INC COM Stock 879433829 352 0 0.00 10 11.11 0.0016
2017-11-15 2017-09-30 13F/A-1 TELEPHONE & DATA SYS INC COM Stock 879433829 352 0 0.00 9 -10.00 0.0015
2017-08-07 2017-06-30 13F TELEPHONE & DATA SYS INC COM Stock 879433829 352 0 0.00 10 11.11 0.0019
2017-05-12 2017-03-31 13F/A-1 TELEPHONE & DATA SYS INC COM Stock 879433829 352 0 0.00 9 -10.00 0.0018
2017-05-12 2017-03-31 13F TELEPHONE & DATA SYS INC COM Stock 879433829 352 9
2017-02-14 2016-12-31 13F TELEPHONE & DATA SYS INC COM Stock 879433829 352 352 10 0.0023
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
(%)
2022-01-19 2021-12-31 13F TELEPHONE & DATA SYS INC COM Stock Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-10-22 2021-09-30 13F TELEPHONE & DATA SYS INC COM Stock Call 2,683 61 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.