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 | |
|---|---|---|---|---|---|---|
|
PNRA
901
PUT
DELISTED
Panera Bread Co
PNRA
| $339K | 0.01% |
441
+123
| +39% | +$27.9K |
|
902
CALL
Goodyear
GT
$2.02B
| $338K | 0.01% |
971
+128
| +15% | +$4.35K |
|
903
iShares Preferred and Income Securities ETF
PFF
$13.2B
| $338K | 0.01% |
+8,756
| New | +$335K |
|
904
PUT
Kohl's
KSS
$2.06B
| $337K | 0.01% |
1,804
+1,567
| +661% | +$64K |
|
905
PUT
Sarepta Therapeutics
SRPT
$1.68B
| $335K | 0.01% |
443
-491
| -53% | -$15.2K |
|
|
HDS
906
DELISTED
HD Supply Holdings, Inc.
HDS
| $334K | 0.01% |
8,133
-10,605
| -57% | -$448K |
|
907
CALL
AstraZeneca
AZN
$261B
| $333K | 0.01% |
1,084
+616
| +132% | +$35.9K |
|
908
CALL
Dollar General
DG
$25.4B
| $333K | 0.01% |
1,256
+579
| +86% | +$42.4K |
|
909
PUT
WisdomTree US Total Dividend Fund
DTD
$1.64B
| $333K | 0.01% |
5,318
+704
| +15% | +$29.3K |
|
910
Jabil
JBL
$33.7B
| $333K | 0.01% |
+11,531
| New | +$295K |
|
|
STON
911
DELISTED
StoneMor Inc.
STON
| $333K | 0.01% |
42,008
+8,951
| +27% | +$90.5K |
|
912
CALL
CVS Health
CVS
$136B
| $332K | 0.01% |
3,442
+111
| +3% | +$8.86K |
|
913
Diageo
DEO
$45.7B
| $332K | 0.01% |
+2,877
| New | +$323K |
|
914
CALL
Qorvo
QRVO
$7.65B
| $332K | 0.01% |
558
+418
| +299% | +$26.9K |
|
915
Tronox
TROX
$1.02B
| $331K | 0.01% |
17,981
+14,392
| +401% | +$214K |
|
916
Xerox
XRX
$341M
| $331K | 0.01% |
11,303
+6,919
| +158% | +$200K |
|
917
Invesco CurrencyShares Japanese Yen Trust
FXY
$423M
| $330K | 0.01% |
3,817
-3,308
| -46% | -$281K |
|
|
DFS
918
DELISTED
Discover Financial Services
DFS
| $329K | 0.01% |
+4,821
| New | +$338K |
|
919
CALL
Martin Marietta Materials
MLM
$32.8B
| $329K | 0.01% |
204
-173
| -46% | -$38.2K |
|
|
GPOR
920
DELISTED
Gulfport Energy Corp.
GPOR
| $329K | 0.01% |
19,197
-36,736
| -66% | -$704K |
|
921
Grand Canyon Education
LOPE
$3.69B
| $328K | 0.01% |
4,586
+2,700
| +143% | +$168K |
|
922
CALL
Nexstar Media Group
NXST
$5.53B
| $328K | 0.01% |
947
+272
| +40% | +$18.2K |
|
923
CALL
Kraft Heinz
KHC
$30.1B
| $327K | 0.01% |
929
-264
| -22% | -$23.8K |
|
924
CALL
ServiceNow
NOW
$94.8B
| $327K | 0.01% |
1,565
+685
| +78% | +$11.9K |
|
|
HTZ
925
PUT
DELISTED
Hertz Global Holdings, Inc.
HTZ
| $327K | 0.01% |
2,391
+1,781
| +292% | +$32.3K |
|
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.