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 |
Alibaba
BABA
|
+$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$97.6M |
| 3 |
Walt Disney
DIS
|
+$73.4M |
| 4 |
Citigroup
C
|
+$45.8M |
| 5 |
KraneShares CSI China Internet ETF
KWEB
|
+$41.5M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$149M |
| 2 |
Amazon
AMZN
|
+$107M |
| 3 |
SPDR Gold Trust
GLD
|
+$58.6M |
| 4 |
Coinbase
COIN
|
+$56.5M |
| 5 |
NVIDIA
NVDA
|
+$48.2M |
Sector Composition
| 1 | Technology | 16.06% |
| 2 | Consumer Discretionary | 14.45% |
| 3 | Communication Services | 10.03% |
| 4 | Financials | 9.44% |
| 5 | Healthcare | 9.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
SAFE
601
Safehold
SAFE
$1.16B
| $575K | ﹤0.01% |
24,600
+8,827
| +56% | +$206K |
|
602
SPDR Portfolio Long Term Treasury ETF
SPTL
$11.9B
| $574K | ﹤0.01% |
19,782
+3,046
| +18% | +$88.4K |
|
|
TGI
603
DELISTED
Triumph Group
TGI
| $569K | ﹤0.01% |
+34,367
| New | +$569K |
|
604
EyePoint Pharmaceuticals
EYPT
$938M
| $565K | ﹤0.01% |
+24,450
| New | +$565K |
|
605
O-I Glass
OI
$2.01B
| $564K | ﹤0.01% |
34,443
+33,913
| +6,399% | +$555K |
|
606
Direxion Daily S&P 500 Bear 3x Shares
SPXS
$426M
| $563K | ﹤0.01% |
48,789
-137,979
| -74% | -$1.59M |
|
607
Fabrinet
FN
$13.4B
| $560K | ﹤0.01% |
+2,944
| New | +$560K |
|
608
Invesco QQQ Trust
QQQ
$371B
| $560K | ﹤0.01% |
+1,368
| New | +$560K |
|
609
Deutsche Bank
DB
$71B
| $559K | ﹤0.01% |
+41,272
| New | +$559K |
|
610
Alnylam Pharmaceuticals
ALNY
$61.5B
| $558K | ﹤0.01% |
2,916
-3,929
| -57% | -$752K |
|
611
Alliance Resource Partners
ARLP
$2.9B
| $558K | ﹤0.01% |
+26,358
| New | +$558K |
|
612
iShares US Treasury Bond ETF
GOVT
$28.3B
| $558K | ﹤0.01% |
24,219
+23,697
| +4,540% | +$546K |
|
613
Flywire
FLYW
$1.63B
| $555K | ﹤0.01% |
23,995
-4,258
| -15% | -$98.5K |
|
|
CTLT
614
DELISTED
CATALENT, INC.
CTLT
| $555K | ﹤0.01% |
+12,369
| New | +$555K |
|
|
BITF
615
Bitfarms
BITF
$1.15B
| $554K | ﹤0.01% |
190,663
+152,926
| +405% | +$444K |
|
|
CNR
616
Core Natural Resources, Inc.
CNR
$3.77B
| $554K | ﹤0.01% |
+5,516
| New | +$554K |
|
617
Designer Brands
DBI
$231M
| $552K | ﹤0.01% |
62,440
+11,740
| +23% | +$104K |
|
618
Sprouts Farmers Market
SFM
$13.5B
| $550K | ﹤0.01% |
11,436
+168
| +1% | +$8.08K |
|
619
Seagate
STX
$41.5B
| $550K | ﹤0.01% |
+6,445
| New | +$550K |
|
620
Inspire Medical Systems
INSP
$2.35B
| $549K | ﹤0.01% |
+2,699
| New | +$549K |
|
621
Crane NXT
CXT
$3.56B
| $547K | ﹤0.01% |
9,636
+8,098
| +527% | +$460K |
|
622
abrdn Physical Gold Shares ETF
SGOL
$5.78B
| $543K | ﹤0.01% |
27,536
+24,217
| +730% | +$478K |
|
623
SIGA Technologies
SIGA
$625M
| $543K | ﹤0.01% |
96,995
-33,299
| -26% | -$186K |
|
|
BRSL
624
Brightstar Lottery PLC
BRSL
$3.15B
| $542K | ﹤0.01% |
+19,774
| New | +$542K |
|
625
Invesco KBW Bank ETF
KBWB
$4.98B
| $538K | ﹤0.01% |
+10,941
| New | +$538K |
|