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 | |
|---|---|---|---|---|---|---|
576
Tradr 2X Long Innovation ETFShort Innovation Daily ETF
SARK
$66.8M
| $769K | ﹤0.01% |
5,548
+4,485
| +422% | +$622K |
|
577
Alight
ALIT
$1.96B
| $764K | ﹤0.01% |
76,785
-54,124
| -41% | -$539K |
|
578
Magnite
MGNI
$3.47B
| $763K | ﹤0.01% |
57,770
-17,703
| -23% | -$234K |
|
|
ADAM
579
Adamas Trust, Inc. Common Stock
ADAM
$658M
| $761K | ﹤0.01% |
52,171
+17,641
| +51% | +$257K |
|
580
Take-Two Interactive
TTWO
$45.7B
| $761K | ﹤0.01% |
4,956
-16,086
| -76% | -$2.47M |
|
581
Technology Select Sector SPDR Fund
XLK
$84.7B
| $761K | ﹤0.01% |
4,790
-52,860
| -92% | -$8.4M |
|
582
Cinemark Holdings
CNK
$3.11B
| $760K | ﹤0.01% |
+43,994
| New | +$760K |
|
583
Sysco
SYY
$38.7B
| $760K | ﹤0.01% |
9,313
-10,885
| -54% | -$888K |
|
584
Steven Madden
SHOO
$2.2B
| $755K | ﹤0.01% |
19,541
+19,456
| +22,889% | +$752K |
|
585
Weatherford International
WFRD
$4.45B
| $755K | ﹤0.01% |
22,685
-17,020
| -43% | -$566K |
|
586
Yelp
YELP
$2B
| $753K | ﹤0.01% |
22,091
+12,206
| +123% | +$416K |
|
|
LICY
587
DELISTED
Li-Cycle Holdings Corp.
LICY
| $749K | ﹤0.01% |
11,093
+5,950
| +116% | +$402K |
|
588
ATAI Life Sciences
ATAI
$1.05B
| $747K | ﹤0.01% |
146,818
+43,614
| +42% | +$222K |
|
589
Trump Media & Technology Group
DJT
$4.73B
| $746K | ﹤0.01% |
11,570
+11,470
| +11,470% | +$740K |
|
590
Century Aluminum
CENX
$2.03B
| $745K | ﹤0.01% |
28,328
+14,569
| +106% | +$383K |
|
591
Commercial Metals
CMC
$6.54B
| $744K | ﹤0.01% |
17,897
+15,069
| +533% | +$626K |
|
592
United States 12 Month Oil Fund,
USL
$42.8M
| $744K | ﹤0.01% |
20,048
-22,971
| -53% | -$852K |
|
|
CTIC
593
DELISTED
CTI BioPharma Corp. (DE) Common Stock
CTIC
| $740K | ﹤0.01% |
158,481
+76,355
| +93% | +$357K |
|
|
TCDA
594
DELISTED
Tricida, Inc. Common Stock
TCDA
| $735K | ﹤0.01% |
89,490
+35,179
| +65% | +$289K |
|
|
MITT
595
AG Mortgage Investment Trust
MITT
$246M
| $734K | ﹤0.01% |
78,962
+39,498
| +100% | +$367K |
|
596
IMAX
IMAX
$1.65B
| $728K | ﹤0.01% |
38,497
-23,395
| -38% | -$442K |
|
597
NOV
NOV
$4.85B
| $725K | ﹤0.01% |
37,019
+3,609
| +11% | +$70.7K |
|
|
SAGE
598
DELISTED
Sage Therapeutics
SAGE
| $725K | ﹤0.01% |
21,929
+16,146
| +279% | +$534K |
|
|
ETRN
599
DELISTED
Equitrans Midstream Corporation Common Stock
ETRN
| $724K | ﹤0.01% |
+85,900
| New | +$724K |
|
600
International Seaways
INSW
$2.33B
| $723K | ﹤0.01% |
+40,086
| New | +$723K |
|