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 |
Apple
AAPL
|
+$186M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$86.2M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$56.8M |
| 4 |
iShares Silver Trust
SLV
|
+$42.9M |
| 5 |
Advanced Micro Devices
AMD
|
+$36.5M |
Top Sells
| 1 |
Occidental Petroleum
OXY
|
+$44.4M |
| 2 |
Financial Select Sector SPDR Fund
XLF
|
+$42.8M |
| 3 |
Verizon
VZ
|
+$40.8M |
| 4 |
Direxion Daily S&P 500 Bull 3x Shares
SPXL
|
+$33.6M |
| 5 |
iShares China Large-Cap ETF
FXI
|
+$33M |
Sector Composition
| 1 | Technology | 23.31% |
| 2 | Consumer Discretionary | 13.02% |
| 3 | Industrials | 8.23% |
| 4 | Healthcare | 7.47% |
| 5 | Financials | 6.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
501
ProShares Trust UltraShort Lehman 7-10 Year Treasury
PST
$13.2M
| $988K | ﹤0.01% |
54,236
+25,904
| +91% | +$472K |
|
502
Molson Coors Class B
TAP
$9.86B
| $985K | ﹤0.01% |
18,467
+13,667
| +285% | +$729K |
|
503
WideOpenWest
WOW
$441M
| $969K | ﹤0.01% |
+55,592
| New | +$969K |
|
504
Direxion Daily Gold Miners Index Bull 2X Shares
NUGT
$870M
| $963K | ﹤0.01% |
13,604
-9,626
| -41% | -$681K |
|
505
Public Storage
PSA
$51.7B
| $955K | ﹤0.01% |
+2,448
| New | +$955K |
|
506
General Mills
GIS
$26.8B
| $951K | ﹤0.01% |
14,045
-31,559
| -69% | -$2.14M |
|
507
Rocket Companies
RKT
$43.1B
| $951K | ﹤0.01% |
85,574
-254,688
| -75% | -$2.83M |
|
508
HDFC Bank
HDB
$181B
| $950K | ﹤0.01% |
15,498
-48,023
| -76% | -$2.94M |
|
509
Gerdau
GGB
$6.31B
| $948K | ﹤0.01% |
185,805
+108,321
| +140% | +$553K |
|
510
Schrodinger
SDGR
$1.43B
| $944K | ﹤0.01% |
27,686
+24,203
| +695% | +$825K |
|
511
Veeva Systems
VEEV
$46.3B
| $943K | ﹤0.01% |
4,443
-1,340
| -23% | -$284K |
|
512
LiveRamp
RAMP
$1.81B
| $936K | ﹤0.01% |
25,049
-35,175
| -58% | -$1.31M |
|
513
Qiagen
QGEN
$10.3B
| $935K | ﹤0.01% |
18,010
-2,873
| -14% | -$149K |
|
|
MFA
514
MFA Financial
MFA
$1.06B
| $934K | ﹤0.01% |
57,981
+54,115
| +1,400% | +$872K |
|
|
HUT
515
Hut 8
HUT
$2.69B
| $932K | ﹤0.01% |
33,782
+15,754
| +87% | +$435K |
|
516
Yext
YEXT
$1.08B
| $909K | ﹤0.01% |
132,003
+29,598
| +29% | +$204K |
|
|
CRON
517
Cronos Group
CRON
$950M
| $905K | ﹤0.01% |
232,848
+157,956
| +211% | +$614K |
|
518
MPLX
MPLX
$51.1B
| $905K | ﹤0.01% |
27,285
+23,812
| +686% | +$790K |
|
519
C4 Therapeutics
CCCC
$193M
| $903K | ﹤0.01% |
+37,246
| New | +$903K |
|
|
SRG
520
Seritage Growth Properties
SRG
$219M
| $898K | ﹤0.01% |
70,968
+40,933
| +136% | +$518K |
|
521
O'Reilly Automotive
ORLY
$90.3B
| $897K | ﹤0.01% |
19,650
-24,180
| -55% | -$1.1M |
|
|
PENG
522
Penguin Solutions, Inc. Ordinary Shares
PENG
$1.3B
| $891K | ﹤0.01% |
34,523
+12,661
| +58% | +$327K |
|
523
Pembina Pipeline
PBA
$22.1B
| $889K | ﹤0.01% |
+23,668
| New | +$889K |
|
524
Ciena
CIEN
$16.8B
| $881K | ﹤0.01% |
14,540
+466
| +3% | +$28.2K |
|
|
UNIT
525
Uniti Group
UNIT
$1.79B
| $879K | ﹤0.01% |
+63,922
| New | +$879K |
|