Compare Stocks › DGX vs TXN
Quest Diagnostics Incorporated (DGX) vs Texas Instruments Incorporated (TXN)
DGX
Quest Diagnostics Incorporated
$192.67
VS
TXN
Texas Instruments Incorporated
$280.95
Rewards
DGX
TXN
- ★Texas Instruments Incorporated has maintained ROIC above 10% for 4 consecutive years, suggesting solid business economics.
- ★Return on equity has consistently exceeded 20% over 4 years, indicating efficient use of shareholder capital.
- ★Dividend yield of 2.02% with a consistent or growing payout over the past 4 years.
Risks
DGX
- ⚠Each dollar of retained earnings has produced only $0.30 of earning power — shareholders may have been better served by dividends.
- ⚠FCF yield of 6.4% suggests reasonable valuation assuming continued moderate growth.
- ⚠Insiders have sold $10.7M worth of stock in the past 3 months — significant insider liquidation.
TXN
- ⚠FCF yield of 1.0% is below 3%, meaning the market is pricing in substantial future growth to justify the current price.
- ⚠Trailing P/E of 48.0x is 77% above the historical average of 27.1x — the stock trades at a premium to its own history.
- ⚠16 insider sales totaling $67.5M with no purchases in the past 3 months — insiders are reducing their exposure.
Key Valuation Metrics
Learn more →DGX
TXN
Valuation
$1.36B
Free Cash Flow
$2.60B
6.37%
FCF Yield
1.02%
21.27
Trailing P/E
48.03
16.53
Forward P/E
30.74
Quality & Moat
8.94%
ROIC
17.87%
12.81%
ROE
29.81%
33.28%
Gross Margin
57.32%
1.37
PEG Ratio
1.53
Balance Sheet Safety
0.83
Debt / Equity
0.84
N/A
Interest Coverage
N/A
2.70
Net Debt / EBITDA
1.03
1.79%
Dividend Yield
2.02%
DGX: 4Ties: 2TXN: 6
DGXTXN
Historical Fundamentals
Learn more →DGX
Price ÷ Earnings Per Share — how many years of current earnings you're paying for at today's price. Lower P/E may indicate undervaluation.
TXN
Price ÷ Earnings Per Share — how many years of current earnings you're paying for at today's price. Lower P/E may indicate undervaluation.
Price ÷ Earnings Per Share — how many years of current earnings you're paying for at today's price. Lower P/E may indicate undervaluation.
$1 Retained Earnings Test
Learn more →DGX
$1.03
created per $1 retained over 3 years
Value Creator
Σ Retained
$1.72B
Δ Market Cap
+$1.77B
Buffett's "$1 Test": For every $1 of earnings retained, has management created at least $1 of market value?
> $1 created per $1 retained = Value Creator · < $1 created = Value Destroyer
> $1 created per $1 retained = Value Creator · < $1 created = Value Destroyer
TXN
$3.91
created per $1 retained over 3 years
Exceptional Value Creator
Σ Retained
$1.96B
Δ Market Cap
+$7.67B
Buffett's "$1 Test": For every $1 of earnings retained, has management created at least $1 of market value?
> $1 created per $1 retained = Value Creator · < $1 created = Value Destroyer
> $1 created per $1 retained = Value Creator · < $1 created = Value Destroyer
Buffett's "$1 Test": For every $1 of earnings retained, has management created at least $1 of market value?
> $1 created per $1 retained = Value Creator · < $1 created = Value Destroyer
Discounted Cash Flow (DCF) Analysis
Learn more →DGX
33.1% Overvalued
Price is 33.1% above estimated fair value
Current Price: $192.67
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
Fair Value: $144.72
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
TXN
47.5% Overvalued
Price is 47.5% above estimated fair value
Current Price: $280.95
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
Fair Value: $190.46
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
Reverse DCF — Market-Implied Growth
Learn more →DGX
What growth rate is the market pricing in at $193?
+12.1%
Market-Implied Owner Earnings Growth
Standard FCF implies +7.8%
The market implies +12.1% Owner Earnings growth, above historical trends.
Standard FCF implies a demanding +7.8%, reflecting heavy growth investment.
TXN
What growth rate is the market pricing in at $281?
+21.0%
Market-Implied Owner Earnings Growth
Standard FCF implies +30.1%
The market implies +21.0% Owner Earnings growth, above historical trends.
Standard FCF implies a demanding +30.1%, reflecting heavy growth investment.
Economic Moat Score
Learn more →DGX
56/100
Narrow Moat
70+ Wide · 40-69 Narrow · <40 None
Narrow moat with margin stability as the key competitive advantage. Improving roic consistency would strengthen the moat.
Composite score measuring competitive advantage durability across four dimensions: returns above cost of capital, pricing power stability, revenue predictability, and capital efficiency. Based on 4 years of fundamental data.
TXN
48/100
Narrow Moat
70+ Wide · 40-69 Narrow · <40 None
Narrow moat with roic consistency as the key competitive advantage. Improving reinvestment efficiency would strengthen the moat.
Composite score measuring competitive advantage durability across four dimensions: returns above cost of capital, pricing power stability, revenue predictability, and capital efficiency. Based on 4 years of fundamental data.
Forensic Accounting
Learn more →DGX
-2.66
Unlikely Manipulator
Above -1.78 = likely manipulator · -2.22 to -1.78 = grey zone
M-Score Trend
Beneish's 8-variable model estimates the probability of earnings manipulation. An M-Score above -1.78 signals elevated risk — companies in this range have historically been 3-5× more likely to be manipulating earnings. Scores between -2.22 and -1.78 fall in a grey zone warranting further investigation.
TXN
-2.67
Unlikely Manipulator
Above -1.78 = likely manipulator · -2.22 to -1.78 = grey zone
M-Score Trend
Beneish's 8-variable model estimates the probability of earnings manipulation. An M-Score above -1.78 signals elevated risk — companies in this range have historically been 3-5× more likely to be manipulating earnings. Scores between -2.22 and -1.78 fall in a grey zone warranting further investigation.
Beneish's 8-variable model estimates the probability of earnings manipulation. An M-Score above -1.78 signals elevated risk — companies in this range have historically been 3-5× more likely to be manipulating earnings. Scores between -2.22 and -1.78 fall in a grey zone warranting further investigation.
Ownership Breakdown
Learn more →DGX
Insiders 0.4%Institutions 99.5%Retail & Other 0.1%
No. of Institutional Holders1,444
High insider ownership aligns management incentives with shareholders — a key signal in Buffett-style analysis. Institutional concentration can indicate smart-money conviction but also crowding risk.
TXN
Insiders 0.3%Institutions 90.9%Retail & Other 8.8%
No. of Institutional Holders3,157
High insider ownership aligns management incentives with shareholders — a key signal in Buffett-style analysis. Institutional concentration can indicate smart-money conviction but also crowding risk.
High insider ownership aligns management incentives with shareholders. Institutional concentration can indicate smart-money conviction but also crowding risk.
Insider Buying Activity
Learn more →DGX
4
Buys (3M)
14
Buys (12M)
Total value (12M): $79,709
PLEWMAN PATRICK
Officer
$9,540
@ $194.69 · 2026-04-20
LASSITER WRIGHT III
Director
$1,168
@ $194.67 · 2026-04-20
KUPPUSAMY KARTHIK
Officer
$7,593
@ $194.69 · 2026-04-20
DELANEY MARK E
Officer
$7,204
@ $194.70 · 2026-04-20
GREGG VICKY B
Director
$12,295
@ $183.51 · 2026-01-28
LASSITER WRIGHT III
Director
$1,285
@ $183.57 · 2026-01-28
KUPPUSAMY KARTHIK
Officer
$2,936
@ $183.50 · 2026-01-28
DELANEY MARK E
Officer
$2,753
@ $183.53 · 2026-01-28
CARTER ROBERT B
Director
$1,101
@ $183.50 · 2026-01-28
GREGG VICKY B
Director
$13,232
@ $167.49 · 2025-07-21
SAMAD SAMER ABDUL
Chief Financial Officer
$12,060
@ $167.50 · 2025-07-21
LASSITER WRIGHT III
Director
$1,173
@ $167.57 · 2025-07-21
KUPPUSAMY KARTHIK
Officer
$4,522
@ $167.48 · 2025-07-21
DELANEY MARK E
Officer
$2,847
@ $167.47 · 2025-07-21
PLEWMAN PATRICK
Officer
$13,318
@ $164.42 · 2025-04-21
SAMAD SAMER ABDUL
Chief Financial Officer
$12,167
@ $164.42 · 2025-04-21
KUPPUSAMY KARTHIK
Officer
$4,439
@ $164.41 · 2025-04-21
DELANEY MARK E
Officer
$4,111
@ $164.44 · 2025-04-21
PLEWMAN PATRICK
Officer
$9,008
@ $158.04 · 2025-01-29
GREGG VICKY B
Director
$11,379
@ $158.04 · 2025-01-29
SAMAD SAMER ABDUL
Chief Financial Officer
$5,531
@ $158.03 · 2025-01-29
KUPPUSAMY KARTHIK
Officer
$1,896
@ $158.00 · 2025-01-29
DELANEY MARK E
Officer
$632.00
@ $158.00 · 2025-01-29
GREGG VICKY B
Director
$11,352
@ $149.37 · 2024-10-21
SAMAD SAMER ABDUL
Chief Financial Officer
$5,527
@ $149.38 · 2024-10-21
KUPPUSAMY KARTHIK
Officer
$3,137
@ $149.38 · 2024-10-21
DELANEY MARK E
Officer
$598.00
@ $149.50 · 2024-10-21
PLEWMAN PATRICK
Officer
$8,962
@ $149.37 · 2024-10-21
GREGG VICKY B
Director
$11,317
@ $146.97 · 2024-07-22
SAMAD SAMER ABDUL
Chief Financial Officer
$3,086
@ $146.95 · 2024-07-22
KUPPUSAMY KARTHIK
Officer
$4,556
@ $146.97 · 2024-07-22
DELANEY MARK E
Officer
$882.00
@ $147.00 · 2024-07-22
PLEWMAN PATRICK
Officer
$8,818
@ $146.97 · 2024-07-22
Open market purchases · includes direct & indirect ownership · excludes option exercises
TXN
0
Buys (3M)
0
Buys (12M)
No open market insider purchases found.
Open market purchases · includes direct & indirect ownership · excludes option exercises
Open market purchases · includes direct & indirect ownership · excludes option exercises.
Insider Selling Activity
Learn more →DGX
12
Sells (3M)
24
Sells (12M)
Total value (12M): $33.21M
DOHERTY CATHERINE T
Officer
$1.15M
@ $206.21 · 2026-03-05
PLEWMAN PATRICK
Officer
$588,730
@ $206.21 · 2026-03-05
PREVOZNIK MICHAEL E
General Counsel
$799,682
@ $206.21 · 2026-03-05
KUPPUSAMY KARTHIK
Officer
$538,372
@ $204.86 · 2026-03-04
DOHERTY CATHERINE T
Officer
$131,285
@ $207.73 · 2026-03-03
PLEWMAN PATRICK
Officer
$85,169
@ $207.73 · 2026-03-03
PREVOZNIK MICHAEL E
General Counsel
$109,266
@ $207.73 · 2026-03-03
DOHERTY CATHERINE T
Officer
$293,521
@ $204.83 · 2026-02-19
PLEWMAN PATRICK
Officer
$196,227
@ $204.83 · 2026-02-19
PREVOZNIK MICHAEL E
General Counsel
$227,566
@ $204.83 · 2026-02-19
DOHERTY CATHERINE T
Officer
$5.39M
@ $206.15 · 2026-02-13
PLEWMAN PATRICK
Officer
$1.16M
@ $204.00 · 2026-02-10
GREGG VICKY B
Director
$239,700
@ $191.76 · 2025-11-25
DAVIS J E CAUSEY
Chief Executive Officer
$10.59M
@ $192.22 · 2025-11-25
DELANEY MARK E
Officer
$1.49M
@ $187.35 · 2025-11-18
PFEIFFER GARY M
Director
$270,317
@ $182.40 · 2025-10-22
PREVOZNIK MICHAEL E
General Counsel
$42,706
@ $188.13 · 2025-09-26
PREVOZNIK MICHAEL E
General Counsel
$5.33M
@ $187.12 · 2025-09-24
PLEWMAN PATRICK
Officer
$365,375
@ $185.00 · 2025-08-21
PLEWMAN PATRICK
Officer
$829,356
@ $183.00 · 2025-08-19
PLEWMAN PATRICK
Officer
$355,500
@ $180.00 · 2025-08-15
PLEWMAN PATRICK
Officer
$968,625
@ $175.00 · 2025-08-06
KUPPUSAMY KARTHIK
Officer
$1.76M
@ $167.95 · 2025-07-31
DELANEY MARK E
Officer
$306,800
@ $175.51 · 2025-05-13
KUPPUSAMY KARTHIK
Officer
$434,350
@ $170.00 · 2025-04-02
DAVIS JAMES E
Chief Executive Officer
$6.60M
@ $168.46 · 2025-04-02
PREVOZNIK MICHAEL E
General Counsel
$789,310
@ $170.00 · 2025-03-17
DOHERTY CATHERINE T
Officer
$935,078
@ $174.13 · 2025-03-05
DOHERTY CATHERINE T
Officer
$125,866
@ $175.79 · 2025-03-04
PREVOZNIK MICHAEL E
General Counsel
$104,068
@ $175.79 · 2025-03-04
DOHERTY CATHERINE T
Officer
$142,231
@ $172.61 · 2025-02-27
PREVOZNIK MICHAEL E
General Counsel
$91,138
@ $172.61 · 2025-02-27
DOHERTY CATHERINE T
Officer
$244,515
@ $170.51 · 2025-02-20
PREVOZNIK MICHAEL E
General Counsel
$103,278
@ $170.99 · 2025-02-20
PLEWMAN PATRICK
Officer
$54,307
@ $169.71 · 2025-02-19
GREGG VICKY B
Director
$205,710
@ $164.57 · 2025-02-05
DELANEY MARK E
Officer
$66,214
@ $164.30 · 2025-02-05
PREVOZNIK MICHAEL E
General Counsel
$5.73M
@ $163.07 · 2024-11-29
DOHERTY CATHERINE T
Officer
$5.40M
@ $162.99 · 2024-11-27
DEPPE MICHAEL J
Officer
$2.89M
@ $154.05 · 2024-11-06
KUPPUSAMY KARTHIK
Officer
$278,525
@ $156.92 · 2024-10-28
PREVOZNIK MICHAEL E
General Counsel
$5.04M
@ $154.97 · 2024-08-29
KUPPUSAMY KARTHIK
Officer
$304,990
@ $153.26 · 2024-08-28
DELANEY MARK E
Officer
$60,094
@ $143.08 · 2024-07-24
Direct ownership only · excludes indirect, option exercises, planned (10b5-1) sales & derivatives
TXN
16
Sells (3M)
19
Sells (12M)
Total value (12M): $69.61M
YUNUS MOHAMMAD
Officer
$13.82M
@ $270.44 · 2026-04-29
KANE KATHARINE
General Counsel
$1.66M
@ $270.41 · 2026-04-27
BAHAI AHMAD
Officer
$982,359
@ $268.40 · 2026-04-27
RON AMICHAI
Officer
$5.00M
@ $272.43 · 2026-04-24
WITZSCHE CHRISTINE
Officer
$998,771
@ $275.52 · 2026-04-24
LEONARD SHANON J
Officer
$5.06M
@ $277.95 · 2026-04-24
LIZARDI RAFAEL R
Chief Financial Officer
$11.12M
@ $274.23 · 2026-04-24
BLUEDORN TODD M
Director
$1.18M
@ $274.25 · 2026-04-24
PATSLEY PAMELA H
Director
$1.19M
@ $276.11 · 2026-04-24
KOZANIAN HAGOP H
Officer
$1.55M
@ $225.95 · 2026-02-17
GARY MARK
Officer
$5.24M
@ $226.00 · 2026-02-11
BAHAI AHMAD
Officer
$1.50M
@ $230.79 · 2026-02-11
LIZARDI RAFAEL R
Chief Financial Officer
$15.88M
@ $221.73 · 2026-02-11
ROBERTS MARK T
Officer
$986,604
@ $221.16 · 2026-02-09
BAHAI AHMAD
Officer
$670,387
@ $223.46 · 2026-02-05
BLINN MARK A
Director
$696,647
@ $221.58 · 2026-02-05
KIRK RONALD
Director
$1.62M
@ $162.33 · 2025-11-24
WITZSCHE CHRISTINE
Officer
$164,306
@ $164.31 · 2025-11-13
BAHAI AHMAD
Officer
$308,030
@ $205.35 · 2025-08-25
TEMPLETON RICHARD K
Chairman of the Board
$19.85M
@ $195.41 · 2025-02-28
TEMPLETON RICHARD K
Chairman of the Board
$38.65M
@ $199.20 · 2025-02-26
TEMPLETON RICHARD K
Chairman of the Board
$39.32M
@ $202.70 · 2025-02-24
CLARK JANET F
Director
$1.23M
@ $203.62 · 2025-02-24
BLINN MARK A
Director
$1.17M
@ $189.89 · 2025-02-19
LEONARD SHANON J
Officer
$401,241
@ $186.62 · 2025-02-18
BLINN MARK A
Director
$106,617
@ $180.71 · 2025-02-04
KIRK RONALD
Director
$2.14M
@ $203.33 · 2024-11-25
GARY MARK
Officer
$3.49M
@ $219.82 · 2024-11-08
ILAN HAVIV
Chief Executive Officer
$2.88M
@ $219.30 · 2024-11-08
YUNUS MOHAMMAD
Officer
$1.81M
@ $216.94 · 2024-11-07
BAHAI AHMAD
Officer
$472,514
@ $217.25 · 2024-11-07
LIZARDI RAFAEL R
Chief Financial Officer
$10.19M
@ $217.16 · 2024-11-07
GARY MARK
Officer
$940,296
@ $214.83 · 2024-11-06
WITZSCHE CHRISTINE
Officer
$27,941
@ $211.67 · 2024-11-06
ILAN HAVIV
Chief Executive Officer
$5.29M
@ $211.50 · 2024-11-06
SANCHEZ ROBERT E
Director
$2.09M
@ $208.80 · 2024-10-25
RON AMICHAI
Officer
$2.76M
@ $213.72 · 2024-08-29
GARY MARK
Officer
$3.22M
@ $212.63 · 2024-08-29
ROBERTS MARK T
Officer
$1.00M
@ $213.08 · 2024-08-29
PATSLEY PAMELA H
Director
$1.29M
@ $212.43 · 2024-08-29
BAHAI AHMAD
Officer
$892,427
@ $209.98 · 2024-08-27
YUNUS MOHAMMAD
Officer
$789,215
@ $208.90 · 2024-08-26
ILAN HAVIV
Chief Executive Officer
$251,324
@ $209.44 · 2024-08-26
GARY MARK
Officer
$939,037
@ $207.20 · 2024-08-23
KNECHT JULIE C.
Officer
$1.63M
@ $209.49 · 2024-08-23
LEONARD SHANON J
Officer
$588,301
@ $208.91 · 2024-08-23
HOBBY JEAN M
Director
$4.37M
@ $205.71 · 2024-08-22
Direct ownership only · excludes indirect, option exercises, planned (10b5-1) sales & derivatives
Direct ownership only · excludes indirect, option exercises, planned (10b5-1) sales & derivatives.
🎭 Mr. Market's Mood
Learn more →DGX
😐Neutral(55/100)
"Market is pricing this stock without strong emotion in either direction"
Composite sentiment score based on 6 market signals. Inspired by Buffett's "Mr. Market" allegory — fear = potential opportunity, greed = potential risk. Must be used alongside fundamental analysis, not in isolation.
TXN
😏Greed(69/100)
"Market is optimistic — be cautious and ensure you have a margin of safety"
Composite sentiment score based on 6 market signals. Inspired by Buffett's "Mr. Market" allegory — fear = potential opportunity, greed = potential risk. Must be used alongside fundamental analysis, not in isolation.
Composite sentiment score based on market signals. Inspired by Buffett’s "Mr. Market" allegory — fear = potential opportunity, greed = potential risk. Must be used alongside fundamental analysis, not in isolation.
⚖️ Buffett Signal
Learn more →DGX
⚪Awaiting DCF Data
The Buffett Signal cross-references market sentiment with DCF valuation. Configure the DCF Analysis above to generate a signal.
DCF Margin of Safety: N/AMr. Market's Mood: Neutral (55)
TXN
⚪Awaiting DCF Data
The Buffett Signal cross-references market sentiment with DCF valuation. Configure the DCF Analysis above to generate a signal.
DCF Margin of Safety: N/AMr. Market's Mood: Greed (69)