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 |
LNKD
LinkedIn Corporation
LNKD
|
+$21.4M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.3M |
| 3 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$15M |
| 4 |
Biogen
BIIB
|
+$14.9M |
| 5 |
Visa
V
|
+$14.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$36.7M |
| 2 |
Alphabet (Google) Class C
GOOG
|
+$20.1M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$15.8M |
| 4 |
Citigroup
C
|
+$14.7M |
| 5 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$13.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 6.61% |
| 2 | Healthcare | 6.55% |
| 3 | Technology | 6.45% |
| 4 | Consumer Discretionary | 4.54% |
| 5 | Financials | 4.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
RIGP
3076
CALL
DELISTED
Transocean Partners LLC
RIGP
| $17K | ﹤0.01% |
+207
| New | +$2.39K |
|
|
SXE
3077
DELISTED
Southcross Energy Partners, L.P.
SXE
| $17K | ﹤0.01% |
8,850
+7,267
| +459% | +$14.8K |
|
3078
PUT
Affiliated Managers Group
AMG
$9.61B
| $16K | ﹤0.01% |
39
+1
| +3% | +$164 |
|
3079
PUT
A.O. Smith
AOS
$8.61B
| $16K | ﹤0.01% |
96
-158
| -62% | -$6.38K |
|
|
BELFB
3080
CALL
Bel Fuse Inc Class B
BELFB
$3.84B
| $16K | ﹤0.01% |
+73
| New | +$1.24K |
|
3081
CALL
BJ's Restaurants
BJRI
$1.45B
| $16K | ﹤0.01% |
+301
| New | +$13.3K |
|
3082
PUT
Bankunited
BKU
$3.36B
| $16K | ﹤0.01% |
+74
| New | +$2.46K |
|
3083
Barnes & Noble Education
BNED
$445M
| $16K | ﹤0.01% |
16
-4
| -20% | -$3.8K |
|
3084
Box
BOX
$4.18B
| $16K | ﹤0.01% |
1,605
+1,052
| +190% | +$12.6K |
|
3085
Cerus
CERS
$615M
| $16K | ﹤0.01% |
+2,597
| New | +$15.5K |
|
3086
CALL
Celldex Therapeutics
CLDX
$2.8B
| $16K | ﹤0.01% |
28
-1
| -3% | -$63 |
|
3087
Curtiss-Wright
CW
$27.5B
| $16K | ﹤0.01% |
196
| – | – |
|
3088
Darling Ingredients
DAR
$9.62B
| $16K | ﹤0.01% |
1,077
-10,225
| -90% | -$148K |
|
3089
PUT
Expeditors International
EXPD
$22.4B
| $16K | ﹤0.01% |
159
-185
| -54% | -$8.98K |
|
3090
CGI
GIB
$14.5B
| $16K | ﹤0.01% |
376
+152
| +68% | +$7.03K |
|
3091
PUT
Hudbay
HBM
$9.96B
| $16K | ﹤0.01% |
+150
| New | +$628 |
|
|
HEES
3092
PUT
DELISTED
H&E Equipment Services
HEES
| $16K | ﹤0.01% |
127
-403
| -76% | -$7.58K |
|
3093
Identive
INVE
$65.1M
| $16K | ﹤0.01% |
9,099
-150
| -2% | -$332 |
|
3094
PUT
Integer Holdings
ITGR
$3.38B
| $16K | ﹤0.01% |
+32
| New | +$1.05K |
|
3095
PUT
Jones Lang LaSalle
JLL
$15.5B
| $16K | ﹤0.01% |
+42
| New | +$4.82K |
|
3096
Kodak
KODK
$788M
| $16K | ﹤0.01% |
1,026
-2,852
| -74% | -$36.9K |
|
3097
Lipocine
LPCN
$17.6M
| $16K | ﹤0.01% |
320
-17
| -5% | -$2.63K |
|
|
MAG
3098
PUT
DELISTED
MAG Silver
MAG
| $16K | ﹤0.01% |
+143
| New | +$1.75K |
|
3099
CALL
Manhattan Associates
MANH
$9.42B
| $16K | ﹤0.01% |
149
+54
| +57% | +$3.37K |
|
3100
CALL
Mattel
MAT
$4.3B
| $16K | ﹤0.01% |
150
-368
| -71% | -$11.7K |
|
Similar funds
Simplex Trading's Q2 2016 Portfolio in Review
As of Q2 2016, Simplex Trading held 7,153 positions worth $1.5B, up 19% from $1.25B the previous quarter. Its ten largest holdings account for 19% of the portfolio.
Simplex Trading deployed $178M of net new capital in Q2 2016, opening 1,586 new positions and adding to 2,321 existing holdings. Its largest new stake was Biogen: 56,467 shares worth $13.7M.
By sector, the portfolio is most concentrated in Communication Services at 6.6% of assets, down from 6.9% a quarter earlier, followed by Healthcare and Technology.
On the sell side, the largest reduction was Broadcom, an estimated $36.7M trimmed.
- Simplex Trading's largest Q2 2016 buy was Biogen: 56,467 shares worth $13.7M.
- Simplex Trading added most to LinkedIn Corporation in Q2 2016, an estimated $21.4M increase.
- Simplex Trading's biggest Q2 2016 reduction was Broadcom, cutting an estimated $36.7M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q2 2016, selling an estimated $20.1M.
- Simplex Trading's ten largest holdings make up 19% of its $1.5B portfolio in Q2 2016.
- Simplex Trading opened 1,586 new positions and closed 1,363 in Q2 2016.
- Simplex Trading's portfolio value rose 19% quarter-over-quarter to $1.5B.
Based on Simplex Trading's 13F filing for Q2 2016, filed 18 Jul 2016.