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 |
Amazon
AMZN
|
+$44.9M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$31.7M |
| 3 |
TWX
Time Warner Inc
TWX
|
+$26.1M |
| 4 |
Booking.com
BKNG
|
+$21.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$18.2M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$42.8M |
| 2 |
Amgen
AMGN
|
+$32.3M |
| 3 |
Baidu
BIDU
|
+$21.9M |
| 4 |
Micron Technology
MU
|
+$21.2M |
| 5 |
Alphabet (Google) Class A
GOOGL
|
+$17.7M |
Sector Composition
| 1 | Consumer Discretionary | 21.41% |
| 2 | Technology | 19.71% |
| 3 | Communication Services | 17.68% |
| 4 | Healthcare | 6.08% |
| 5 | Financials | 5.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
476
Lamar Advertising Co
LAMR
$13B
| $367K | 0.02% |
5,363
-10,646
| -67% | -$729K |
|
477
LiveRamp
RAMP
$1.78B
| $366K | 0.01% |
+14,861
| New | +$366K |
|
478
D.R. Horton
DHI
$52.8B
| $365K | 0.01% |
+9,154
| New | +$365K |
|
479
Canadian Pacific Kansas City
CP
$69.1B
| $363K | 0.01% |
+10,820
| New | +$363K |
|
480
Wintrust Financial
WTFC
$9.24B
| $363K | 0.01% |
4,640
+2,285
| +97% | +$179K |
|
|
DBVT
481
DBV Technologies
DBVT
$243M
| $361K | 0.01% |
852
+261
| +44% | +$111K |
|
482
O'Reilly Automotive
ORLY
$89.3B
| $361K | 0.01% |
+25,170
| New | +$361K |
|
|
BPL
483
DELISTED
Buckeye Partners, L.P.
BPL
| $361K | 0.01% |
6,345
-19,083
| -75% | -$1.09M |
|
484
Prologis
PLD
$105B
| $360K | 0.01% |
5,680
+1,436
| +34% | +$91K |
|
|
MNK
485
DELISTED
MALLINCKRODT PUBLIC LIMITED COMPANY
MNK
| $358K | 0.01% |
+9,597
| New | +$358K |
|
|
CVRR
486
DELISTED
CVR Refining, LP
CVRR
| $358K | 0.01% |
36,376
+27,820
| +325% | +$274K |
|
487
BGC Group
BGC
$4.72B
| $358K | 0.01% |
38,486
+25,338
| +193% | +$236K |
|
488
Pan American Silver
PAAS
$14.9B
| $357K | 0.01% |
20,978
+12,085
| +136% | +$206K |
|
489
Sunoco
SUN
$7B
| $355K | 0.01% |
+11,421
| New | +$355K |
|
490
Brunswick
BC
$4.26B
| $353K | 0.01% |
6,324
+3,193
| +102% | +$178K |
|
|
WMGI
491
DELISTED
Wright Medical Group Inc
WMGI
| $353K | 0.01% |
13,670
+1,328
| +11% | +$34.3K |
|
492
OFG Bancorp
OFG
$1.95B
| $351K | 0.01% |
38,459
+1,517
| +4% | +$13.8K |
|
493
Immersion
IMMR
$228M
| $347K | 0.01% |
42,547
-10,805
| -20% | -$88.1K |
|
|
PDCE
494
DELISTED
PDC Energy, Inc.
PDCE
| $347K | 0.01% |
7,088
+5,166
| +269% | +$253K |
|
|
SODA
495
DELISTED
SodaStream International Ltd
SODA
| $346K | 0.01% |
5,218
+4,100
| +367% | +$272K |
|
|
KLXI
496
DELISTED
KLX Inc.
KLXI
| $344K | 0.01% |
+7,715
| New | +$344K |
|
497
Anika Therapeutics
ANIK
$127M
| $343K | 0.01% |
+5,931
| New | +$343K |
|
498
Brookdale Senior Living
BKD
$1.81B
| $342K | 0.01% |
32,341
+32,141
| +16,071% | +$340K |
|
499
KB Home
KBH
$4.47B
| $342K | 0.01% |
+14,206
| New | +$342K |
|
500
Verisk Analytics
VRSK
$37.6B
| $342K | 0.01% |
4,122
+3,154
| +326% | +$262K |
|