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 |
Invesco QQQ Trust
QQQ
|
+$92M |
| 2 |
Walt Disney
DIS
|
+$25.4M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$12.8M |
| 4 |
Baidu
BIDU
|
+$12.2M |
| 5 |
RHT
Red Hat Inc
RHT
|
+$11.6M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
+$61.4M |
| 2 |
Amazon
AMZN
|
+$59.6M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$35.5M |
| 4 |
Apple
AAPL
|
+$19.6M |
| 5 |
Financial Select Sector SPDR Fund
XLF
|
+$18.2M |
Sector Composition
| 1 | Communication Services | 16.98% |
| 2 | Technology | 12.42% |
| 3 | Healthcare | 10.02% |
| 4 | Consumer Discretionary | 8.53% |
| 5 | Industrials | 6.01% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
751
Addus HomeCare
ADUS
$2.11B
| $145K | ﹤0.01% |
+2,286
| New | +$145K |
|
752
Catalyst Pharmaceutical
CPRX
$2.46B
| $145K | ﹤0.01% |
28,535
+25,542
| +853% | +$130K |
|
753
AvalonBay Communities
AVB
$27.7B
| $144K | ﹤0.01% |
+720
| New | +$144K |
|
754
Okta
OKTA
$16.3B
| $144K | ﹤0.01% |
1,746
-6,941
| -80% | -$572K |
|
|
LGF.A
755
DELISTED
Lions Gate Entertainment Corp. Class A Voting Shares
LGF.A
| $144K | ﹤0.01% |
+9,216
| New | +$144K |
|
|
BKS
756
DELISTED
Barnes & Noble
BKS
| $144K | ﹤0.01% |
26,526
-38,901
| -59% | -$211K |
|
757
Kforce
KFRC
$577M
| $143K | ﹤0.01% |
4,083
+62
| +2% | +$2.17K |
|
758
Pilgrim's Pride
PPC
$10.6B
| $143K | ﹤0.01% |
6,427
-6,755
| -51% | -$150K |
|
|
GHDX
759
DELISTED
Genomic Health, Inc.
GHDX
| $143K | ﹤0.01% |
2,054
-1,532
| -43% | -$107K |
|
760
Frontline
FRO
$5.1B
| $142K | ﹤0.01% |
+22,093
| New | +$142K |
|
761
Guardant Health
GH
$7.5B
| $142K | ﹤0.01% |
+1,856
| New | +$142K |
|
762
nVent Electric
NVT
$14.9B
| $142K | ﹤0.01% |
+5,282
| New | +$142K |
|
763
Microsoft
MSFT
$3.7T
| $141K | ﹤0.01% |
1,200
-4,000
| -77% | -$470K |
|
764
Zillow
ZG
$21B
| $140K | ﹤0.01% |
+4,097
| New | +$140K |
|
765
NGL Energy Partners
NGL
$752M
| $139K | ﹤0.01% |
9,964
+7,570
| +316% | +$106K |
|
766
Energizer
ENR
$1.96B
| $138K | ﹤0.01% |
3,083
-2,698
| -47% | -$121K |
|
|
EXTN
767
DELISTED
Exterran Corporation
EXTN
| $138K | ﹤0.01% |
+8,229
| New | +$138K |
|
|
GASL
768
DELISTED
Direxion Daily Natural Gas Related Bull 3X Shares
GASL
| $138K | ﹤0.01% |
+35
| New | +$138K |
|
769
Invesco CurrencyShares Canadian Dollar Trust
FXC
$91.7M
| $137K | ﹤0.01% |
+1,860
| New | +$137K |
|
770
Matsons
MATX
$3.33B
| $137K | ﹤0.01% |
+3,813
| New | +$137K |
|
771
Tetra Tech
TTEK
$9.38B
| $137K | ﹤0.01% |
+11,515
| New | +$137K |
|
772
CRA International
CRAI
$1.27B
| $136K | ﹤0.01% |
2,706
+2,310
| +583% | +$116K |
|
773
Opko Health
OPK
$1.13B
| $136K | ﹤0.01% |
52,163
+13,411
| +35% | +$35K |
|
|
IMGN
774
DELISTED
Immunogen Inc
IMGN
| $136K | ﹤0.01% |
50,533
+15,883
| +46% | +$42.7K |
|
|
SWIR
775
DELISTED
Sierra Wireless
SWIR
| $136K | ﹤0.01% |
11,071
+6,515
| +143% | +$80K |
|