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 | |
|---|---|---|---|---|---|---|
|
SAFE
551
Safehold
SAFE
$1.16B
| $815K | ﹤0.01% |
7,158
-2,433
| -25% | -$277K |
|
552
Newmark Group
NMRK
$3.26B
| $812K | ﹤0.01% |
+51,024
| New | +$812K |
|
553
Crown Holdings
CCK
$10.9B
| $809K | ﹤0.01% |
6,473
-6,896
| -52% | -$862K |
|
554
Burlington
BURL
$17.9B
| $807K | ﹤0.01% |
+4,434
| New | +$807K |
|
|
CMPS
555
Compass Pathways
CMPS
$493M
| $807K | ﹤0.01% |
62,670
+34,599
| +123% | +$446K |
|
|
ETWO
556
DELISTED
E2open Parent Holdings
ETWO
| $804K | ﹤0.01% |
91,299
-7,034
| -7% | -$61.9K |
|
|
AMRS
557
DELISTED
Amyris Inc.
AMRS
| $804K | ﹤0.01% |
184,410
-74,957
| -29% | -$327K |
|
558
Marathon Digital Holdings
MARA
$5.73B
| $803K | ﹤0.01% |
28,736
-82,438
| -74% | -$2.3M |
|
559
Vicor
VICR
$2.26B
| $800K | ﹤0.01% |
11,341
+3,539
| +45% | +$250K |
|
560
Alamos Gold
AGI
$13.6B
| $799K | ﹤0.01% |
94,899
+56,946
| +150% | +$479K |
|
561
Comerica
CMA
$8.82B
| $799K | ﹤0.01% |
8,836
+357
| +4% | +$32.3K |
|
|
RWT
562
Redwood Trust
RWT
$802M
| $791K | ﹤0.01% |
75,171
+44,580
| +146% | +$469K |
|
563
Athira Pharma
ATHA
$15M
| $790K | ﹤0.01% |
58,531
-13,837
| -19% | -$187K |
|
564
Direxion Daily Junior Gold Miners Index Bear 2X Shares
JDST
$54.2M
| $787K | ﹤0.01% |
10,213
-8,085
| -44% | -$623K |
|
565
SPDR Euro Stoxx 50 ETF
FEZ
$4.56B
| $784K | ﹤0.01% |
+19,059
| New | +$784K |
|
566
Grifois
GRFS
$6.78B
| $784K | ﹤0.01% |
67,190
+54,994
| +451% | +$642K |
|
567
Lightspeed Commerce
LSPD
$1.64B
| $784K | ﹤0.01% |
25,739
+23,939
| +1,330% | +$729K |
|
568
YPF
YPF
$10.8B
| $784K | ﹤0.01% |
162,349
+66,053
| +69% | +$319K |
|
|
SPWR
569
DELISTED
SunPower Corporation Common Stock
SPWR
| $783K | ﹤0.01% |
36,493
-28,620
| -44% | -$614K |
|
570
Equinox Gold
EQX
$7.73B
| $782K | ﹤0.01% |
94,589
-19,360
| -17% | -$160K |
|
571
ING
ING
$73.2B
| $778K | ﹤0.01% |
+74,641
| New | +$778K |
|
572
Adtran
ADTN
$825M
| $773K | ﹤0.01% |
41,925
+1,428
| +4% | +$26.3K |
|
573
CubeSmart
CUBE
$9.3B
| $773K | ﹤0.01% |
14,861
+11,815
| +388% | +$615K |
|
574
Caleres
CAL
$527M
| $771K | ﹤0.01% |
39,929
+25,092
| +169% | +$485K |
|
575
Lumentum
LITE
$10.6B
| $769K | ﹤0.01% |
7,880
-1,485
| -16% | -$145K |
|