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 |
Alibaba
BABA
|
+$48.9M |
| 2 |
Boeing
BA
|
+$25.8M |
| 3 |
SPDR Gold Trust
GLD
|
+$18.2M |
| 4 |
Biogen
BIIB
|
+$15.8M |
| 5 |
FedEx
FDX
|
+$13.6M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
+$62.1M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$36.4M |
| 3 |
Industrial Select Sector SPDR Fund
XLI
|
+$17.5M |
| 4 |
Netflix
NFLX
|
+$16.3M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14.6M |
Sector Composition
| 1 | Consumer Discretionary | 16.74% |
| 2 | Technology | 16.32% |
| 3 | Healthcare | 12.17% |
| 4 | Industrials | 12.14% |
| 5 | Communication Services | 7.05% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
PEI
901
DELISTED
Pennsylvania Real Estate Investment Trust
PEI
| $94K | ﹤0.01% |
+1,100
| New | +$94K |
|
902
BJ's Restaurants
BJRI
$716M
| $93K | ﹤0.01% |
+2,411
| New | +$93K |
|
903
Brookfield
BN
$103B
| $93K | ﹤0.01% |
3,382
+1,840
| +119% | +$50.6K |
|
904
Delek Logistics
DKL
$2.38B
| $93K | ﹤0.01% |
2,993
+2,086
| +230% | +$64.8K |
|
905
Emcor
EME
$28.6B
| $93K | ﹤0.01% |
+1,088
| New | +$93K |
|
906
Franklin Covey
FC
$246M
| $93K | ﹤0.01% |
+2,670
| New | +$93K |
|
907
Mercury Insurance
MCY
$4.38B
| $93K | ﹤0.01% |
+1,674
| New | +$93K |
|
908
Napco Security Technologies
NSSC
$1.48B
| $92K | ﹤0.01% |
+7,248
| New | +$92K |
|
909
Sandstorm Gold
SAND
$3.44B
| $92K | ﹤0.01% |
16,405
+10,132
| +162% | +$56.8K |
|
910
iShares S&P GSCI Commodity-Indexed Trust
GSG
$992M
| $91K | ﹤0.01% |
6,092
+3,200
| +111% | +$47.8K |
|
911
iShares Russell 1000 Value ETF
IWD
$64.2B
| $91K | ﹤0.01% |
+715
| New | +$91K |
|
912
WD-40
WDFC
$2.88B
| $91K | ﹤0.01% |
499
-683
| -58% | -$125K |
|
|
CLDT
913
Chatham Lodging
CLDT
$354M
| $90K | ﹤0.01% |
+4,960
| New | +$90K |
|
914
Community Health Systems
CYH
$420M
| $90K | ﹤0.01% |
25,116
-53,475
| -68% | -$192K |
|
915
iShares Core Dividend Growth ETF
DGRO
$34.4B
| $90K | ﹤0.01% |
2,301
+1,800
| +359% | +$70.4K |
|
916
Editas Medicine
EDIT
$244M
| $90K | ﹤0.01% |
+3,965
| New | +$90K |
|
917
MarineMax
HZO
$573M
| $90K | ﹤0.01% |
5,831
+5,247
| +898% | +$81K |
|
918
Kinross Gold
KGC
$28.3B
| $90K | ﹤0.01% |
19,617
+16,459
| +521% | +$75.5K |
|
|
MINI
919
DELISTED
Mobile Mini Inc
MINI
| $90K | ﹤0.01% |
+2,458
| New | +$90K |
|
920
AXIS Capital
AXS
$7.76B
| $89K | ﹤0.01% |
+1,343
| New | +$89K |
|
921
Minerva Neurosciences
NERV
$14.9M
| $89K | ﹤0.01% |
1,443
+1,285
| +813% | +$79.3K |
|
922
Piper Sandler
PIPR
$6.13B
| $89K | ﹤0.01% |
+1,191
| New | +$89K |
|
|
WAIR
923
DELISTED
WESCO Aircraft Holdings Inc.
WAIR
| $89K | ﹤0.01% |
8,154
+1,579
| +24% | +$17.2K |
|
|
LJPC
924
DELISTED
La Jolla Pharmaceutical Company
LJPC
| $89K | ﹤0.01% |
10,191
-21,825
| -68% | -$191K |
|
|
BLDP
925
Ballard Power Systems
BLDP
$616M
| $88K | ﹤0.01% |
+18,019
| New | +$88K |
|