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 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$278M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$84.4M |
| 3 |
NVIDIA
NVDA
|
+$76.9M |
| 4 |
TSMC
TSM
|
+$74.9M |
| 5 |
Amazon
AMZN
|
+$53.5M |
Top Sells
| 1 |
Apple
AAPL
|
+$497M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
+$73.7M |
| 3 |
Alibaba
BABA
|
+$49M |
| 4 |
Advanced Micro Devices
AMD
|
+$48.1M |
| 5 |
Uber
UBER
|
+$41.8M |
Sector Composition
| 1 | Technology | 22.9% |
| 2 | Consumer Discretionary | 12.26% |
| 3 | Healthcare | 9.52% |
| 4 | Communication Services | 8.42% |
| 5 | Financials | 7.07% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
526
Manchester United
MANU
$2.81B
| $559K | ﹤0.01% |
42,743
+15,629
| +58% | +$204K |
|
527
Academy Sports + Outdoors
ASO
$3.21B
| $559K | ﹤0.01% |
12,261
+8,040
| +190% | +$367K |
|
528
Celestica
CLS
$29.1B
| $559K | ﹤0.01% |
+7,105
| New | +$559K |
|
|
CIM
529
Chimera Investment
CIM
$1.17B
| $558K | ﹤0.01% |
+43,557
| New | +$558K |
|
530
ProShares Ultra Gold
UGL
$744M
| $558K | ﹤0.01% |
+17,340
| New | +$558K |
|
531
Alaska Air
ALK
$7.22B
| $557K | ﹤0.01% |
+11,331
| New | +$557K |
|
532
SL Green Realty
SLG
$4.29B
| $557K | ﹤0.01% |
9,664
+3,690
| +62% | +$213K |
|
533
Immersion
IMMR
$222M
| $555K | ﹤0.01% |
73,300
+64,016
| +690% | +$485K |
|
534
Norfolk Southern
NSC
$61.1B
| $554K | ﹤0.01% |
2,340
-768
| -25% | -$182K |
|
535
ARS Pharmaceuticals
SPRY
$1.04B
| $554K | ﹤0.01% |
44,092
+31,786
| +258% | +$399K |
|
536
Hilton Worldwide
HLT
$64.2B
| $549K | ﹤0.01% |
2,413
-21,184
| -90% | -$4.82M |
|
537
Itron
ITRI
$5.41B
| $548K | ﹤0.01% |
+5,232
| New | +$548K |
|
538
Pultegroup
PHM
$26.7B
| $544K | ﹤0.01% |
+5,293
| New | +$544K |
|
539
Sterling Infrastructure
STRL
$9.16B
| $543K | ﹤0.01% |
+4,801
| New | +$543K |
|
|
MSTU
540
T-Rex 2X Long MSTR Daily Target ETF
MSTU
$980M
| $542K | ﹤0.01% |
99,305
-1,246,111
| -93% | -$6.8M |
|
541
W.P. Carey
WPC
$14.8B
| $541K | ﹤0.01% |
+8,586
| New | +$541K |
|
542
Bruker
BRKR
$4.63B
| $540K | ﹤0.01% |
+12,939
| New | +$540K |
|
543
iShares MSCI Mexico ETF
EWW
$1.86B
| $537K | ﹤0.01% |
10,541
+5,814
| +123% | +$296K |
|
544
Joby Aviation
JOBY
$11.4B
| $531K | ﹤0.01% |
+88,251
| New | +$531K |
|
|
SA
545
Seabridge Gold
SA
$1.8B
| $531K | ﹤0.01% |
45,565
+29,091
| +177% | +$339K |
|
546
Fluence Energy
FLNC
$886M
| $529K | ﹤0.01% |
+109,244
| New | +$529K |
|
547
Cimpress
CMPR
$1.44B
| $528K | ﹤0.01% |
11,685
+11,635
| +23,270% | +$526K |
|
548
Amicus Therapeutics
FOLD
$2.45B
| $527K | ﹤0.01% |
64,614
+53,957
| +506% | +$440K |
|
|
ETHU
549
2x Ether ETF
ETHU
$2.47B
| $527K | ﹤0.01% |
14,386
+4,066
| +39% | +$149K |
|
550
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
$281M
| $525K | ﹤0.01% |
15,609
-78,062
| -83% | -$2.63M |
|