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 Russell 2000 ETF
IWM
|
+$27.5M |
| 2 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$16.3M |
| 3 |
Walt Disney
DIS
|
+$13.9M |
| 4 |
iShares MSCI Emerging Markets ETF
EEM
|
+$10.4M |
| 5 |
Gilead Sciences
GILD
|
+$10.4M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
+$95.3M |
| 2 |
Apple
AAPL
|
+$21.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$20M |
| 4 |
IBM
IBM
|
+$13.4M |
| 5 |
Baidu
BIDU
|
+$12.1M |
Sector Composition
| 1 | Healthcare | 13.63% |
| 2 | Communication Services | 9.81% |
| 3 | Consumer Discretionary | 9.7% |
| 4 | Technology | 9.67% |
| 5 | Financials | 9.48% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
551
Snap-on
SNA
$16.9B
| $155K | 0.01% |
+1,032
| New | +$155K |
|
552
Weibo
WB
$2.98B
| $152K | 0.01% |
+13,008
| New | +$152K |
|
553
iShares US Transportation ETF
IYT
$604M
| $151K | 0.01% |
+4,328
| New | +$151K |
|
|
FL
554
DELISTED
Foot Locker
FL
| $150K | 0.01% |
+2,086
| New | +$150K |
|
555
Realty Income
O
$54.4B
| $150K | 0.01% |
+3,278
| New | +$150K |
|
|
VLP
556
DELISTED
Valero Energy Partners LP
VLP
| $150K | 0.01% |
+3,407
| New | +$150K |
|
557
Pentair
PNR
$17.9B
| $149K | 0.01% |
+4,361
| New | +$149K |
|
558
iShares JPMorgan USD Emerging Markets Bond ETF
EMB
$13.9B
| $148K | 0.01% |
1,393
+867
| +165% | +$92.1K |
|
|
FDML
559
DELISTED
Federal-Mogul Holdings Corporation
FDML
| $148K | 0.01% |
21,706
+19,272
| +792% | +$131K |
|
560
Renasant Corp
RNST
$3.67B
| $147K | 0.01% |
+4,493
| New | +$147K |
|
561
Adverum Biotechnologies
ADVM
$69.5M
| $146K | 0.01% |
1,781
-2,172
| -55% | -$178K |
|
|
RSPP
562
DELISTED
RSP Permian, Inc.
RSPP
| $146K | 0.01% |
7,236
+3,769
| +109% | +$76K |
|
563
Ball Corp
BALL
$13.6B
| $145K | 0.01% |
+4,668
| New | +$145K |
|
|
AVP
564
DELISTED
Avon Products, Inc.
AVP
| $145K | 0.01% |
+44,744
| New | +$145K |
|
565
Weyerhaeuser
WY
$18.1B
| $144K | 0.01% |
+5,297
| New | +$144K |
|
|
EQC
566
DELISTED
Equity Commonwealth
EQC
| $144K | 0.01% |
5,294
+5,204
| +5,782% | +$142K |
|
567
iShares Russell 1000 ETF
IWB
$44.2B
| $143K | 0.01% |
1,342
+1,335
| +19,071% | +$142K |
|
568
Topgolf Callaway Brands
MODG
$1.7B
| $143K | 0.01% |
17,185
-8,217
| -32% | -$68.4K |
|
|
PIR
569
DELISTED
Pier 1 Imports, Inc.
PIR
| $143K | 0.01% |
1,040
+736
| +242% | +$101K |
|
570
Citizens Financial Group
CFG
$22.3B
| $140K | 0.01% |
5,892
+5,845
| +12,436% | +$139K |
|
571
iShares S&P 500 Growth ETF
IVW
$65B
| $140K | 0.01% |
5,208
+4,980
| +2,184% | +$134K |
|
572
Nektar Therapeutics
NKTR
$916M
| $140K | 0.01% |
+852
| New | +$140K |
|
573
Boston Beer
SAM
$2.39B
| $140K | 0.01% |
+667
| New | +$140K |
|
|
SWN
574
DELISTED
Southwestern Energy Company
SWN
| $140K | 0.01% |
11,071
+10,871
| +5,436% | +$137K |
|
|
RPRX
575
DELISTED
Repros Therapeutics Inc.
RPRX
| $139K | 0.01% |
+18,831
| New | +$139K |
|