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
| Rank | Stock | Value |
|---|---|---|
| 1 |
Goldman Sachs
GS
|
+$40.4M |
| 2 |
NVIDIA
NVDA
|
+$23.1M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.5M |
| 4 |
Wells Fargo
WFC
|
+$20.8M |
| 5 |
Micron Technology
MU
|
+$20M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Citigroup
C
|
+$21.4M |
| 2 |
Apple
AAPL
|
+$15.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$14.4M |
| 4 |
Eli Lilly
LLY
|
+$10.5M |
| 5 |
iShares Biotechnology ETF
IBB
|
+$8.06M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 39.75% |
| 2 | Technology | 9.92% |
| 3 | Communication Services | 9.47% |
| 4 | Consumer Discretionary | 9.11% |
| 5 | Healthcare | 8.95% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1301
PPG Industries
PPG
$25B
| $178K | 0.01% |
+1,699
| New | +$172K |
|
|
JUNO
1302
DELISTED
Juno Therapeutics, Inc.
JUNO
| $178K | 0.01% |
8,048
-6,446
| -44% | -$138K |
|
1303
PUT
Medtronic
MDT
$120B
| $177K | 0.01% |
1,072
-130
| -11% | -$10.2K |
|
1304
CALL
NewMarket
NEU
$8.14B
| $177K | 0.01% |
+78
| New | +$34.1K |
|
|
VER
1305
DELISTED
VEREIT, Inc.
VER
| $177K | 0.01% |
+4,189
| New | +$181K |
|
1306
CALL
Capital One
COF
$135B
| $176K | 0.01% |
476
-840
| -64% | -$74.8K |
|
1307
PUT
Cognizant
CTSH
$28.1B
| $176K | 0.01% |
1,379
+398
| +41% | +$22.9K |
|
|
NAK
1308
PUT
Northern Dynasty Minerals
NAK
$826M
| $176K | 0.01% |
1,100
+715
| +186% | +$1.47K |
|
1309
PUT
Helmerich & Payne
HP
$4.43B
| $175K | 0.01% |
375
-148
| -28% | -$10.5K |
|
1310
PUT
XPO
XPO
$22.6B
| $175K | 0.01% |
1,845
+839
| +83% | +$13.7K |
|
|
FMSA
1311
DELISTED
Fairmount Santrol Holdings Inc.
FMSA
| $175K | 0.01% |
+23,887
| New | +$249K |
|
1312
CALL
Coherent
COHR
$55.2B
| $174K | 0.01% |
201
+114
| +131% | +$4.03K |
|
1313
Direxion Daily S&P Biotech Bull 3X ETF
LABU
$569M
| $174K | 0.01% |
+182
| New | +$162K |
|
1314
Liberty Global Class C
LBTYK
$3.56B
| $174K | 0.01% |
4,975
+4,295
| +632% | +$148K |
|
1315
Paychex
PAYX
$43.3B
| $174K | 0.01% |
+2,959
| New | +$180K |
|
1316
Protalix BioTherapeutics
PLX
$215M
| $174K | 0.01% |
+12,844
| New | +$115K |
|
|
P
1317
Everpure Inc
P
$33.1B
| $174K | 0.01% |
17,783
-10,501
| -37% | -$116K |
|
1318
CALL
Regions Financial
RF
$25.9B
| $174K | 0.01% |
777
-727
| -48% | -$10.7K |
|
|
WW
1319
CALL
DELISTED
WW International
WW
| $174K | 0.01% |
545
+359
| +193% | +$4.94K |
|
|
MTOR
1320
CALL
DELISTED
MERITOR, Inc.
MTOR
| $174K | 0.01% |
634
+462
| +269% | +$7.15K |
|
|
SXCP
1321
DELISTED
SunCoke Energy Partners, L.P.
SXCP
| $174K | 0.01% |
+11,386
| New | +$196K |
|
|
RICE
1322
DELISTED
Rice Energy Inc.
RICE
| $174K | 0.01% |
7,366
-38,454
| -84% | -$798K |
|
|
CMO
1323
DELISTED
Capstead Mortgage Corp.
CMO
| $174K | 0.01% |
16,515
+13,438
| +437% | +$142K |
|
1324
CALL
State Street
STT
$53.4B
| $173K | 0.01% |
436
+169
| +63% | +$13.4K |
|
|
AKS
1325
CALL
DELISTED
AK Steel Holding Corp
AKS
| $173K | 0.01% |
1,415
-2,530
| -64% | -$21.7K |
|
Similar funds
Simplex Trading's Q1 2017 Portfolio in Review
As of Q1 2017, Simplex Trading held 7,485 positions worth $2.31B, up 38% from $1.67B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading deployed $539M of net new capital in Q1 2017, opening 1,662 new positions and adding to 2,374 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
By sector, the portfolio is most concentrated in Miscellaneous at 40% of assets, down from 51% a quarter earlier, followed by Technology and Communication Services.
On the sell side, the largest reduction was Citigroup, an estimated $21.4M trimmed.
- Simplex Trading's largest Q1 2017 buy was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
- Simplex Trading added most to Goldman Sachs in Q1 2017, an estimated $40.4M increase.
- Simplex Trading's biggest Q1 2017 reduction was Citigroup, cutting an estimated $21.4M.
- Simplex Trading fully exited Invesco QQQ Trust in Q1 2017, selling an estimated $14.4M.
- Simplex Trading's ten largest holdings make up 18% of its $2.31B portfolio in Q1 2017.
- Simplex Trading opened 1,662 new positions and closed 1,368 in Q1 2017.
- Simplex Trading's portfolio value rose 38% quarter-over-quarter to $2.31B.
Based on Simplex Trading's 13F filing for Q1 2017, filed 21 Apr 2017.