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 | |
|---|---|---|---|---|---|---|
801
American Eagle Outfitters
AEO
$2.99B
| $284K | 0.02% |
+17,882
| New | +$273K |
|
|
ZEN
802
DELISTED
ZENDESK INC
ZEN
| $284K | 0.02% |
10,785
-21,203
| -66% | -$512K |
|
|
GRUB
803
DELISTED
Just Eat Takeaway.com N.V. American Depositary Shares
GRUB
| $283K | 0.02% |
4,564
-1,208
| -21% | -$63.5K |
|
804
PUT
Insmed
INSM
$23.1B
| $282K | 0.02% |
507
+321
| +173% | +$3.75K |
|
805
State Street Financial Select Sector SPDR ETF
XLF
$55.3B
| $282K | 0.02% |
+14,088
| New | +$285K |
|
806
PUT
NVIDIA
NVDA
$5.14T
| $281K | 0.02% |
95,480
+50,080
| +110% | +$51.6K |
|
|
SWN
807
CALL
DELISTED
Southwestern Energy Company
SWN
| $280K | 0.02% |
3,182
+1,919
| +152% | +$23.3K |
|
808
Olin
OLN
$2.76B
| $279K | 0.02% |
11,249
-366
| -3% | -$7.89K |
|
|
CPGX
809
DELISTED
COLUMBIA PIPELINE GROUP IN COM STK (DE)
CPGX
| $279K | 0.02% |
10,968
-13,636
| -55% | -$347K |
|
810
ProShares Short Russell2000
RWM
$121M
| $278K | 0.02% |
4,723
+4,129
| +695% | +$250K |
|
811
CALL
ProShares UltraShort Health Care
RXD
$3.38M
| $278K | 0.02% |
1,397
+239
| +21% | +$46K |
|
812
Alaunos Therapeutics
TCRT
$4.76M
| $278K | 0.02% |
338
+236
| +231% | +$257K |
|
813
CALL
General Dynamics
GD
$101B
| $277K | 0.02% |
355
-73
| -17% | -$10.2K |
|
814
Outfront Media
OUT
$5.62B
| $277K | 0.02% |
11,663
+10,407
| +829% | +$228K |
|
815
CALL
PepsiCo
PEP
$185B
| $277K | 0.02% |
1,313
+348
| +36% | +$35.9K |
|
816
Heron Therapeutics
HRTX
$88.5M
| $275K | 0.02% |
15,266
+3,310
| +28% | +$64.6K |
|
|
FMSA
817
DELISTED
Fairmount Santrol Holdings Inc.
FMSA
| $275K | 0.02% |
+35,689
| New | +$176K |
|
818
ICICI Bank
IBN
$106B
| $274K | 0.02% |
42,063
+41,001
| +3,861% | +$264K |
|
|
TYNS
819
CALL
DELISTED
Direxion Daily 7-10 Year Treasury Bear 1X Shares
TYNS
| $273K | 0.02% |
2,348
-895
| -28% | -$25K |
|
820
Hain Celestial
HAIN
$51.4M
| $272K | 0.02% |
5,476
+700
| +15% | +$32.4K |
|
821
Delek US
DK
$4.06B
| $271K | 0.02% |
20,532
+3,361
| +20% | +$47.8K |
|
822
iShares MSCI Canada ETF
EWC
$6.06B
| $270K | 0.02% |
+11,045
| New | +$270K |
|
823
PUT
Illumina
ILMN
$28.9B
| $270K | 0.02% |
177
-280
| -61% | -$39.8K |
|
824
CALL
Morgan Stanley
MS
$343B
| $269K | 0.02% |
3,576
+671
| +23% | +$17.5K |
|
825
PUT
Abercrombie & Fitch
ANF
$4.27B
| $268K | 0.02% |
760
+391
| +106% | +$9.32K |
|
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.