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 | |
|---|---|---|---|---|---|---|
1926
PUT
Yum! Brands
YUM
$41B
| $83K | ﹤0.01% |
1,394
+770
| +123% | +$50.1K |
|
|
INTX
1927
PUT
DELISTED
Intersections, Inc.
INTX
| $83K | ﹤0.01% |
742
+325
| +78% | +$1.26K |
|
|
PX
1928
PUT
DELISTED
Praxair Inc
PX
| $83K | ﹤0.01% |
191
-32
| -14% | -$3.76K |
|
|
FNSR
1929
CALL
DELISTED
Finisar Corp
FNSR
| $83K | ﹤0.01% |
1,409
+1,169
| +487% | +$35.8K |
|
1930
DNOW Inc
DNOW
$2.63B
| $82K | ﹤0.01% |
4,842
-11,333
| -70% | -$223K |
|
1931
Fossil Group
FOSL
$239M
| $82K | ﹤0.01% |
+4,724
| New | +$100K |
|
|
HIMX
1932
CALL
Himax Technologies
HIMX
$2.2B
| $82K | ﹤0.01% |
1,142
-1,469
| -56% | -$9.95K |
|
1933
IDT Corp
IDT
$1.6B
| $82K | ﹤0.01% |
+7,684
| New | +$113K |
|
1934
KBR
KBR
$4.68B
| $82K | ﹤0.01% |
5,476
+4,750
| +654% | +$75.5K |
|
1935
CALL
Kulicke & Soffa
KLIC
$5.3B
| $82K | ﹤0.01% |
244
+21
| +9% | +$404 |
|
1936
CALL
Kinder Morgan
KMI
$73.1B
| $82K | ﹤0.01% |
3,083
-211
| -6% | -$4.61K |
|
1937
CALL
Lumentum
LITE
$59.4B
| $82K | ﹤0.01% |
418
+135
| +48% | +$5.96K |
|
1938
PUT
Nu Skin
NUS
$247M
| $82K | ﹤0.01% |
561
+511
| +1,022% | +$26.3K |
|
|
ATHN
1939
CALL
DELISTED
Athenahealth, Inc.
ATHN
| $82K | ﹤0.01% |
112
-127
| -53% | -$14.8K |
|
|
SGYPW
1940
PUT
DELISTED
Synergy Pharmaceuticals, Inc. - Warrants
SGYPW
| $82K | ﹤0.01% |
954
+329
| +53% | +$28.3K |
|
|
VEDL
1941
DELISTED
Vedanta Limited American Depostary Shares (Each representing four equity shares)
VEDL
| $82K | ﹤0.01% |
4,785
+425
| +10% | +$6.43K |
|
1942
Kodak
KODK
$806M
| $81K | ﹤0.01% |
+7,075
| New | +$96.8K |
|
|
NGD
1943
DELISTED
New Gold Inc
NGD
| $81K | ﹤0.01% |
27,328
+13,274
| +94% | +$42.9K |
|
1944
Natural Health Trends
NHTC
$15.4M
| $81K | ﹤0.01% |
2,836
+2,787
| +5,688% | +$74.9K |
|
1945
FreightCar America
RAIL
$275M
| $81K | ﹤0.01% |
6,506
+4,572
| +236% | +$64K |
|
|
TOUR
1946
PUT
Tuniu
TOUR
$55.4M
| $81K | ﹤0.01% |
60
-15
| -20% | -$1.32K |
|
|
FINL
1947
PUT
DELISTED
Finish Line
FINL
| $81K | ﹤0.01% |
693
+286
| +70% | +$4.8K |
|
1948
Bio-Rad Laboratories Class A
BIO
$8.42B
| $80K | ﹤0.01% |
+402
| New | +$77.4K |
|
1949
iShares MSCI India ETF
INDA
$6.71B
| $80K | ﹤0.01% |
+2,564
| New | +$75.1K |
|
1950
US Global Jets ETF
JETS
$802M
| $80K | ﹤0.01% |
+2,872
| New | +$81.4K |
|
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.