Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
Apple
AAPL
|
+$258M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$75.7M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$67.2M |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$59.4M |
| 5 |
Intel
INTC
|
+$45.8M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$56.8M |
| 2 |
iShares Silver Trust
SLV
|
+$45.9M |
| 3 |
Ford
F
|
+$32.5M |
| 4 |
Exxon Mobil
XOM
|
+$20.4M |
| 5 |
Caterpillar
CAT
|
+$19.2M |
Sector Composition
| 1 | Technology | 26.01% |
| 2 | Consumer Discretionary | 9.82% |
| 3 | Communication Services | 9.82% |
| 4 | Financials | 8.68% |
| 5 | Healthcare | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
451
Danaos Corp
DAC
$1.75B
| $720K | ﹤0.01% |
11,418
-29,290
| -72% | -$1.85M |
|
|
FRGI
452
DELISTED
Fiesta Restaurant Group, Inc.
FRGI
| $715K | ﹤0.01% |
100,220
+49,105
| +96% | +$350K |
|
453
Invesco S&P 500 High Beta ETF
SPHB
$439M
| $714K | ﹤0.01% |
12,183
+7,349
| +152% | +$431K |
|
454
ProShares UltraPro Short Russell2000
SRTY
$81.6M
| $714K | ﹤0.01% |
9,891
+8,788
| +797% | +$634K |
|
455
UDR
UDR
$12.8B
| $712K | ﹤0.01% |
15,471
+5,397
| +54% | +$248K |
|
456
NETSCOUT
NTCT
$1.78B
| $711K | ﹤0.01% |
21,017
+18,421
| +710% | +$623K |
|
|
FTCH
457
DELISTED
Farfetch Limited Class A Ordinary Shares
FTCH
| $701K | ﹤0.01% |
+97,943
| New | +$701K |
|
458
PMV Pharmaceuticals
PMVP
$74.2M
| $694K | ﹤0.01% |
+48,757
| New | +$694K |
|
459
Airbnb
ABNB
$75.8B
| $693K | ﹤0.01% |
7,783
-10,922
| -58% | -$972K |
|
460
Amplify Alternative Harvest ETF
MJ
$184M
| $692K | ﹤0.01% |
9,955
-4,732
| -32% | -$329K |
|
461
Zoetis
ZTS
$67.3B
| $690K | ﹤0.01% |
4,017
-12,080
| -75% | -$2.07M |
|
462
iShares S&P 500 Growth ETF
IVW
$64.3B
| $685K | ﹤0.01% |
11,360
-9,399
| -45% | -$567K |
|
463
Annaly Capital Management
NLY
$14.2B
| $684K | ﹤0.01% |
+28,947
| New | +$684K |
|
|
CRON
464
Cronos Group
CRON
$950M
| $682K | ﹤0.01% |
242,075
+9,227
| +4% | +$26K |
|
465
TG Therapeutics
TGTX
$5.14B
| $681K | ﹤0.01% |
160,409
-2,490
| -2% | -$10.6K |
|
466
Signet Jewelers
SIG
$3.79B
| $679K | ﹤0.01% |
12,707
+8,276
| +187% | +$442K |
|
467
Tidewater
TDW
$2.92B
| $676K | ﹤0.01% |
32,066
-334
| -1% | -$7.04K |
|
468
Cantaloupe
CTLP
$794M
| $674K | ﹤0.01% |
120,386
+19,791
| +20% | +$111K |
|
469
Tanger
SKT
$3.93B
| $668K | ﹤0.01% |
+47,005
| New | +$668K |
|
470
Ligand Pharmaceuticals
LGND
$3.23B
| $667K | ﹤0.01% |
11,986
+11,754
| +5,066% | +$654K |
|
|
CDK
471
DELISTED
CDK Global, Inc.
CDK
| $659K | ﹤0.01% |
12,044
-37,814
| -76% | -$2.07M |
|
472
Cars.com
CARS
$830M
| $658K | ﹤0.01% |
69,848
+40,933
| +142% | +$386K |
|
|
RADI
473
DELISTED
Radius Global Infrastructure, Inc. Class A Common Stock
RADI
| $652K | ﹤0.01% |
42,773
+26,017
| +155% | +$397K |
|
474
SolarEdge
SEDG
$1.99B
| $647K | ﹤0.01% |
+2,365
| New | +$647K |
|
475
Resources Connection
RGP
$172M
| $644K | ﹤0.01% |
31,663
+29,732
| +1,540% | +$605K |
|