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 | Technology | 9.73% |
| 2 | Communication Services | 9.25% |
| 3 | Consumer Discretionary | 8.76% |
| 4 | Healthcare | 8.53% |
| 5 | Financials | 7.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
CVRR
976
DELISTED
CVR Refining, LP
CVRR
| $297K | 0.01% |
31,492
+10,146
| +48% | +$109K |
|
|
AMRN
977
Amarin Corp
AMRN
$285M
| $296K | 0.01% |
+4,627
| New | +$294K |
|
978
CALL
General Mills
GIS
$19B
| $296K | 0.01% |
1,041
-155
| -13% | -$9.48K |
|
979
Huntington Bancshares
HBAN
$35.3B
| $296K | 0.01% |
22,126
+10,651
| +93% | +$146K |
|
980
CALL
Ollie's Bargain Outlet
OLLI
$3.94B
| $295K | 0.01% |
623
+594
| +2,048% | +$18.7K |
|
981
XBiotech
XBIT
$69.5M
| $295K | 0.01% |
+17,941
| New | +$235K |
|
982
Qiagen
QGEN
$8.55B
| $294K | 0.01% |
+9,599
| New | +$296K |
|
983
Grupo Aeroportuario del Sureste
ASR
$8.1B
| $293K | 0.01% |
+1,696
| New | +$262K |
|
984
BCE
BCE
$19.8B
| $293K | 0.01% |
6,627
-7,751
| -54% | -$341K |
|
|
ENDP
985
DELISTED
Endo International plc
ENDP
| $293K | 0.01% |
+26,268
| New | +$326K |
|
|
BLUE
986
CALL
DELISTED
bluebird bio
BLUE
| $292K | 0.01% |
12
-5
| -29% | -$5.1K |
|
987
ProShares UltraShort QQQ
QID
$262M
| $292K | 0.01% |
192
+63
| +49% | +$104K |
|
988
PUT
Home Depot
HD
$324B
| $291K | 0.01% |
5,917
+2,850
| +93% | +$404K |
|
|
TMX
989
DELISTED
Terminix Global Holdings, Inc.
TMX
| $290K | 0.01% |
+10,393
| New | +$270K |
|
|
K
990
PUT
DELISTED
Kellanova
K
| $289K | 0.01% |
1,435
+1,317
| +1,116% | +$90.9K |
|
991
Unum
UNM
$13.8B
| $289K | 0.01% |
+6,170
| New | +$289K |
|
992
CALL
Blackrock
BLK
$161B
| $288K | 0.01% |
305
+58
| +23% | +$22.2K |
|
993
PUT
HSBC
HSBC
$349B
| $288K | 0.01% |
3,104
+858
| +38% | +$32.2K |
|
|
SC
994
DELISTED
SANTANDER CONSUMER USA HOLDINGS INC
SC
| $288K | 0.01% |
+21,648
| New | +$300K |
|
|
ANDV
995
PUT
DELISTED
Andeavor
ANDV
| $288K | 0.01% |
1,628
+494
| +44% | +$41.4K |
|
996
PUT
Sibanye-Stillwater
SBSW
$5.97B
| $287K | 0.01% |
1,691
+1,231
| +268% | +$9.76K |
|
997
CALL
Zimmer Biomet
ZBH
$17.3B
| $286K | 0.01% |
343
-200
| -37% | -$22.7K |
|
|
HSTO
998
DELISTED
Histogen Inc. Common Stock
HSTO
| $286K | 0.01% |
+248
| New | +$239K |
|
999
PUT
AB InBev
BUD
$155B
| $285K | 0.01% |
1,616
+370
| +30% | +$39.8K |
|
1000
CALL
Idexx Laboratories
IDXX
$42.5B
| $285K | 0.01% |
157
-31
| -16% | -$4.27K |
|
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 $551M 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 Technology at 9.7% of assets, up from 7.2% a quarter earlier, followed by Communication Services and Consumer Discretionary.
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 1,369 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.