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 |
NVIDIA
NVDA
|
+$60M |
| 2 |
Microsoft
MSFT
|
+$58.6M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$52.5M |
| 4 |
PayPal
PYPL
|
+$40.9M |
| 5 |
Netflix
NFLX
|
+$29.7M |
Top Sells
| 1 |
Apple
AAPL
|
+$48.7M |
| 2 |
Walmart
WMT
|
+$45.2M |
| 3 |
Adobe
ADBE
|
+$40.6M |
| 4 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 5 |
Enphase Energy
ENPH
|
+$27.2M |
Sector Composition
| 1 | Technology | 21.17% |
| 2 | Healthcare | 10.87% |
| 3 | Consumer Discretionary | 10.73% |
| 4 | Communication Services | 10.55% |
| 5 | Financials | 7.54% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
601
AvalonBay Communities
AVB
$27.4B
| $438K | ﹤0.01% |
+2,316
| New | +$438K |
|
602
fuboTV
FUBO
$1.35B
| $438K | ﹤0.01% |
210,861
+204,762
| +3,357% | +$425K |
|
603
American Eagle Outfitters
AEO
$3.34B
| $436K | ﹤0.01% |
+36,953
| New | +$436K |
|
604
iShares Russell Mid-Cap Growth ETF
IWP
$20.5B
| $436K | ﹤0.01% |
4,521
-3,213
| -42% | -$310K |
|
605
Signet Jewelers
SIG
$3.75B
| $436K | ﹤0.01% |
6,692
-10,160
| -60% | -$662K |
|
606
F5
FFIV
$18.8B
| $434K | ﹤0.01% |
+2,971
| New | +$434K |
|
607
Archer Aviation
ACHR
$5.32B
| $433K | ﹤0.01% |
105,186
+11,659
| +12% | +$48K |
|
608
Tencent Music
TME
$39.2B
| $430K | ﹤0.01% |
+58,328
| New | +$430K |
|
609
Equinox Gold
EQX
$8.4B
| $429K | ﹤0.01% |
93,698
-204,129
| -69% | -$935K |
|
610
iShares MSCI Mexico ETF
EWW
$1.86B
| $427K | ﹤0.01% |
+6,868
| New | +$427K |
|
611
Alliance Resource Partners
ARLP
$2.92B
| $426K | ﹤0.01% |
+23,086
| New | +$426K |
|
612
Immersion
IMMR
$222M
| $425K | ﹤0.01% |
60,084
+30,932
| +106% | +$219K |
|
613
Emergent Biosolutions
EBS
$425M
| $422K | ﹤0.01% |
57,515
+30,047
| +109% | +$220K |
|
614
TH International
THCH
$80.7M
| $422K | ﹤0.01% |
29,436
+29,317
| +24,636% | +$420K |
|
|
DEN
615
DELISTED
Denbury Inc.
DEN
| $421K | ﹤0.01% |
4,882
+603
| +14% | +$52K |
|
616
iShares MSCI ACWI ETF
ACWI
$22.3B
| $417K | ﹤0.01% |
+4,353
| New | +$417K |
|
|
TRTN
617
DELISTED
Triton International Limited
TRTN
| $417K | ﹤0.01% |
5,012
+4,261
| +567% | +$355K |
|
|
RVNC
618
DELISTED
Revance Therapeutics, Inc.
RVNC
| $414K | ﹤0.01% |
16,365
+784
| +5% | +$19.8K |
|
619
Direxion Daily MSCI Brazil Bull 2X Shares
BRZU
$134M
| $412K | ﹤0.01% |
4,612
-9,250
| -67% | -$826K |
|
620
Credit Acceptance
CACC
$5.8B
| $409K | ﹤0.01% |
807
+757
| +1,514% | +$384K |
|
621
EnerSys
ENS
$3.92B
| $409K | ﹤0.01% |
+3,770
| New | +$409K |
|
622
LoveSac
LOVE
$302M
| $408K | ﹤0.01% |
+15,156
| New | +$408K |
|
|
AZUL
623
DELISTED
Azul
AZUL
| $407K | ﹤0.01% |
+29,771
| New | +$407K |
|
624
Fulgent Genetics
FLGT
$667M
| $407K | ﹤0.01% |
10,996
+8,531
| +346% | +$316K |
|
625
Perrigo
PRGO
$3.04B
| $405K | ﹤0.01% |
11,931
+5,897
| +98% | +$200K |
|